Where to find trusted diamond sellers?

It can be tough finding a trusted diamond seller but here at Diamond Karma we want to give you a few tips on what to look for when finding a seller

How’s their notoriety like? – You get what you really ask for and this announcement is particularly obvious with regards to the adornments business. The snappiest and least demanding approach to discover is to check online discussions or vendor sites for audits and tributes. Discovering the past encounters of clients is a decent method to size up an organization’s administration. This goes for both on the web and disconnected businesses.

 

What sort of precious stones do they sell? – You can see if the seller handles quality precious stones by perusing their stock. On the off chance that the gem specialist just arrangements with EGL/IGI reviewed or other “in-house confirmed” precious stones, it’s an indication for you to RUN!

 

9.5 out of 10 goldsmiths who manage such stones don’t sell not too bad stuff dependent on my experience. Actually, they are depending on you to be insufficiently instructed so they can cheat you for a mediocre stone with an erroneous report. It’s a shark tank out there and the main way a layman purchaser can ensure themselves is to request an AGS or GIA testament.

 

Are their costs aggressive contrasted with other challenge? – The most ideal approach to do this is to use similar details of a precious stone and make an inquiry or two unique vendors at costs. A decent benchmark would utilize the recorded costs of online sellers. By looking at the data, you will most likely make sense of a harsh normal and have a thought of whether you are overpaying for a stone.

 

Do they give data about the 4Cs? – A decent seller will dependably try to instruct the buyer on what they are purchasing. These are carat, clearness, shading and cut. Obviously, it’s additionally a smart thought to look into on these themes before you even begin shopping.

 

Ensure that the organization or vendor are happy to address any inquiries you have and in the event that they can’t or won’t, proceed onward. In the event that they can’t get fundamental client administration right, envision what might occur if something somehow happened to turn out badly or on the off chance that you required their guidance for post-buy administrations.

 

Do they have an ensured gemologist on staff? – A gemologist will almost certainly give you nitty gritty data on everything that has to do with the precious stone and what makes it one of a kind. I am not alluding to sales reps here but rather qualified personals who can deal with precious stones proficiently. Ensure that they are utilizing the right devices when evaluating the estimation of the stone.

 

What are the arrival approaches (assuming any)? – Is he/she willing to give you a 100% discount ensure on the off chance that you choose to alter your perspective inside the arrival time frame? You will need this to be recorded as a hard copy in the event that any debates emerge. On the off chance that they don’t have a discount arrangement, I suggest evolving sellers. Else, it would be reasonable for you to look for the guidance of an autonomous gemologist to survey the precious stone before getting it.

 

Is the precious stone clash free? – You will need ensure that the vendor just exchanges with struggle free jewels. Tragically the “blood precious stones” that had financed the African common wars and rough exercises are still in overwhelming course. It’s suggested that you demand legitimate documentation and confirmation that the gemstone was genuinely imported before making a buy.

How important are diamonds to Earth’s habitability?

The life span of Earth’s mainlands even with dangerous structural action is a fundamental geologic background for the rise of life on our planet. This security relies upon the hidden mantle joined to the landmasses. New research by a gathering of geoscientists from Carnegie, the Gemological Institute of America, and the University of Alberta exhibits that jewels can be utilized to uncover how a light segment of mantle underneath a portion of the mainlands turned out to be thick enough to give long haul solidness.

“We’ve figured out how to utilize hints of sulfur from antiquated volcanoes that advanced into the mantle and in the end into precious stones to give proof to one specific procedure of mainland building,” clarified Karen Smit of the Gemological Institute of America, lead creator on the gathering’s paper, which shows up this week in Science. “Our method demonstrates that the geologic action that framed the West African mainland was because of plate structural development of sea outside layer sinking into the mantle.”

Precious stones might be darling by adornments gatherers, however they are really a geologist’s closest companion. Since they begin somewhere inside the Earth, modest mineral grains caught within a jewel, frequently viewed as bothersome in the diamond exchange, can uncover insights regarding the conditions under which it shaped.

“Along these lines, jewels go about as mineralogical emissaries from the Earth’s profundities,” clarified Carnegie co-creator Steve Shirey.

Around 150 to 200 kilometers, 93 to 124 miles, underneath the surface, geologic arrangements called mantle keels go about as stabilizers for the mainland outside layer. The material that includes them must thicken, balance out, and cool under the mainland to shape a solid, light, bottom that is crucial for protecting the surface landmass against the tenacious dangerous powers of Earth’s structural action. Yet, how this is practiced has involved discussion in mainstream researchers.

“Unraveling this riddle is vital to seeing how the landmasses came to exist in their present manifestations and how they make due on a functioning planet,” Shirey clarified. “Since this is the main structurally dynamic, rough planet that we know, understanding the geography of how our mainlands shaped is a significant piece of observing what makes Earth livable.”

A few researchers think mantle keels structure by a procedure called subduction, by which maritime plates sink from the Earth’s surface into its profundities when one structural plate slides underneath another. Others think keels are made by a vertical procedure in which crest of hot magma ascend from a lot further in the Earth.

A geochemical apparatus that can recognize whether the wellspring of a mantle bottom’s cosmetics started from surface plates or from upwelling of more profound mantle material was expected to help settle this discussion. Fortunately, mantle keels have the perfect conditions for precious stone development. This implies researchers can uncover a mantle bottom’s starting point by examining incorporations from jewels that shaped in it.

The examination gathering’s investigation of sulfur-rich minerals, called sulfides, in precious stones mined in Sierra Leone demonstrate that the area experienced two subduction occasions during its history.

They had the option to make this assurance in light of the fact that the science of the sulfide mineral grains is just found in tests from Earth’s surface more than 2.5 billion years back – before oxygen turned out to be so copious in our planet’s climate. This implies the sulfur in these mineral considerations must have once existed on the Earth’s surface and was then drawn down into the mantle by subduction.

The group’s correlation with precious stones from Botswana indicated comparable proof of bottom creation through subduction. Be that as it may, correlation with precious stones mined from northern Canada does not demonstrate a similar sulfur science, implying that the mantle bottom in this area began here and there that did not fuse surface material.

The gathering’s discoveries propose that thickening and adjustment of the mantle bottom underneath the West African mainland happened when this area of mantle was crushed by impact with the sinking sea depths material. This technique for bottom thickening and landmass adjustment isn’t in charge of shaping the bottom under a segment of northern Canada. The sulfide minerals inside Canadian jewels don’t tell the scientists how this bottom framed, just how it didn’t.

“Our work demonstrates that sulfide considerations in precious stones are a useful asset to examine mainland development forms,” Smit finished up.

This work was bolstered by the GIA, the University of Alberta, the NSF, and Carnegie. It is a commitment to the Deep Carbon Observatory.

Where to sell my high-end jewelry

Sell designer jewelry

Thinking of selling your high-end jewelry or designer jewelry such as; Tiffany, Cartier, David Yurman, Van Cleef & Arpels, Buccellati, and more…

designer jewelry represents a line of original jewelry can be range from anything from a silver chain to a more extravagant diamonds necklace.

If you are looking to sell your heirlooms, there are a number of different ways to go about this. One advantage of selling these branded names is that it retains more value than others, perhaps ‘ordinary’ jewelry.

Designers jewelry is much more collectible and therefore valuable, especially when it is from certain well-known names.

How do I sell designer pieces?

It is important to take into consideration the different options, especially if you are a first-time seller. Following these steps below;

remember that the emotional value is personal to you or sentimental value. the buyer will be seeking the jewelry with monetary value. So as much as a ring may mean to you, the value of jewelry is only based on the piece as an object.

It is important to consider this so as to not overestimate how much your jewelry is really worth. Before selling gather all the information and certificates if any about your jewelry, make sure to keep them together, this will be used as the evidence that your item is authentic and certified.

Once you have all the information about your jewelry, is time to research who are the best online buyers, but no worries, diamondKarma got you covered

We have researched and reviewed some of the most trusted online jewelry buyers and found that Diamond Buyers International is still number one then Revere Jewels in Beverly Hills, California.

Designer jewelry can be both beautiful and classic, and the value can vary across years and designers. From Tiffany to Cartier, or Van Cleef & Arpels to David Yurman, and Buccellati. Diamond Buyers International and Revere Jewels know luxury brands and their distinct flavors. Oftentimes, designer jewelry does not depreciate the same way that other jewelry can.

These companies recognize the astuteness of a name and they value accordingly. If you are looking for a quick and secure transaction, your best option is to sell your designer pieces to these specialist buyers; DBI and RevereJewels.  These companies buying your jewelry with No hidden costs or fees involved. And the process is so simple and easy.

Revere Jewels is a premier buyer of diamonds and fine jewelry in Beverly Hills offering their clients’ unsurpassed prices on previously owned pieces. Now with the new and updated site and offices in Beverly Hills, and San Francisco, California.  Las Vegas, Nevada. And Dallas, Texas.

With a five star review on Yelp and A+ ratings by BBBRevere Jewels buy jewelry from anywhere with secure, and insured shipping, Revere Jewels is a real deal when it comes to selling your designer pieces.

Revere Jewels

Identify diamond treatments

Technologies for diamond treatments

The treatment used to improve the appearance of natural diamonds include laser drilling, typically followed by acid treatment, to remove the black inclusions; the filling of large surface-reaching fractures with high-refractive-index glass; and color enhancement by various procedures. Two of the most important developments in the decade are:

* A new type of laser drilling, KM treatment (Kiduah Meyuhad means”special drill” in Hebrew) for removing inclusions (Horikawa 2001). This procedure produces an internal, surface-reaching fracture that looks more like a ‘feather’ than a traditional laser-induced channel, but still allows introduction of an acid to dissolve the inclusion.

*High-pressure, high-temperature (HPHT) processing which causes dramatic changes in color. The HPHT process combined with the older techniques of radiation and heat treatment to produce fancy pink-to-red specimens. Diamonds enhanced in this way by Lucent diamonds Inc. Of equal, if not greater, importance is the ability of HPHT processing to produce colorless or near colorless stones from brown type IIa diamonds. This treatment also occasionally results in pink or (more rarely) blue specimens, which have absorption spectra that are similar to those of naturally colored diamonds.

Although most color enhancement of diamonds is done legitimately, and the process declared, some treated diamonds may be fraudulently described as having a natural color as they travel through different distribution channels. Therefore, it is vital that gem-testing laboratories have the experience to recognize color-enhanced diamonds and that research into their characterization and identification continues to keep up with the new enhancement techniques as they are introduced. All colored diamonds need to be examined carefully; furthermore, in principle, any colorless or near-colorless diamond is potentially a type IIa diamond that has been color-enhanced(from brown) by HPHT processing. Fortunately, it is quick and easy to determine whether a diamond is type IIa (by using Diamondsure or a similar instrumental), and the majority of diamonds (around 99%) are not in fact, type IIa.

Visual inspection with a 10x loupe an optical microscope (to detect drill holes and feathers produced by lasers, as well as the “flash effect” associated with glass-filled fractures together with optical absorption and luminescence spectroscopies, enable detection of most treated diamonds (some more readily than others). Visual evidence of graining, as well as graphitized cracks and inclusions also give important clues that the diamond has been subjected to HPHT processing. However, despite the range of assessment techniques available, it is likely that a few diamonds will be encountered for which it is not possible to say with certainty whether the color is natural or enhanced. Recent research indicates that the phosphorescent behavior of blue diamonds produced by HPHT processing is different from that of a natural blue diamonds, and this observation may provide an additional analytical tool for examining certain stones. The KM laser treatment can often be verified by examining polishing marks on the diamond’s surface by differential interference microscopy.

 

Fancy Deep Pinkish Purple Diamond

Fancy deep pinkish purple, natural color

Understanding the HPHT processing

If a diamond is heated to above 750 degree Celsius in the air, it will start to burn. However, if the diamond is under extreme pressure, similar to natural diamond formation, then even temperature up to 2000 degree Celsius will not cause significant degradation. These extreme annealing temperatures create the conditions for the diamond to change color. While the concept is easily understood, many do not fully appreciate the investment and the maintenance demanded by this technology. Sundance Diamonds uses a propriety press that was developed for HPHT processing that costs close to $1 million. Providing the extreme conditions necessary for this process creates the need for continual maintenance with costly materials. Sundance Diamonds could not survive without its parent company and their team of scientists and engineers to support and maintain the equipment. Even with continual investment to reduce the risks and optimize the outcome, HPHT treatment remains a volatile process with the possibility of fracture and complete loss of the diamond being treated.

 

Fancy Vivid Blue Green Diamond

Fancy vivid blue-green, natural color

 

Traditionally, the HPHT process has been used to reduce brown hues in type IIa diamonds to appear colorless or near colorless. Now through years of research, almost all brown diamonds can benefit from HPHT technology. Nitrogen, a common diamond impurity, can be manipulated at high temperatures to yield colors that are rare in nature. Green and intense yellow were the first colors to show promise, with irradiation, pink and purple are now possible. With ongoing research, we hope to be able to present a whole rainbow of reproducible colors. All of these niche colors offer the potential for additional usability and profit from brown diamonds.

Light Champagne Diamond

Light brown, natural color

 

What millennials think about synthetic diamond engagement ring?

Most people think that genuine/earth mined diamonds are too expensive to afford and they go for synthetics when buying, is it really worth for your money to go for the synthetics?

Researches shown that the millennials are not happy and disappointed when they found out the diamond  they received were synthetics. Once in a life time diamond engagement ring, they want it to be real thing , i mean genuine diamond not synthetics. Most of them feel cheated when found out later that it were not as valuable. And they all want the genuine proposal not synthetic.

At the same time when asked women around the globe to see what they feel when it comes to 4Cs, majority of them think its really important when deciding to purchase a diamond. The cut is the most important of all, the millennials thinks that if they can’t afford the big one, they will go small with better cutting that has life, shine and sparkle, not big and milky or cloudy. Some of the millennials may sacrifice on the size to have a flawless with well-cut diamond. Its nothing wrong going with the big diamonds, if you can afford it, if not go with the small ones with better cut and clarity.

Genuine diamond prices stay strong,  roughly about 3 to 5% up in the past few months from colorless(D, E, F),SI2, SI1, VS2, VS1 clarity. Consumers more toward I1 to VS2 clarity,G/H  near colorless to F colorless, average size 1carat to 1.49carats round brilliant cut. And oval shape is still very hot and demand.  Diamond dealers require higher premium for their 1.10 to 1.49 cts ovals. Below just some of the styles that Diamondkarma helps consumers with;

From diamonds to colored stones, consumers are still in love with the ovals, of course round brilliant cut is the most popular one.

At last, it shows that no matter who you are , where you come from, majority of us still in for better goods and genuine diamonds. Size does not really matter in this case. consumers like genuine diamonds more than synthetics, if they cant afford the big sizes they will go with the small ones with better cut. The current most popular purchased 1 caraters are H, G, F colors and the clarities are I1(eye clean), SI1, SI2 to VS1 with (triple X) means excellent Cut, Polish, and Symmetry, medium to none fluorescence GIA certified only.

4 Easy Steps to Find your Perfect Engagement ring

Diamonds have been with us forever, most of them, at a couple billion years old. You have always dreamed of wearing a sparkling diamond ring and now is the time, but the question is which diamond or what type of ring should it be for my future wife?  There are several ways to help make up your decision. Here is how to find the perfect diamond ring in 4 easy steps;

1- Set your budget

The most important thing is to set your budget. And know what shape of diamond you like. Is it round brilliant cut or fancy cuts? Usually round brilliant cut is most expensive than the fancy cuts. Or you may visit here to get to know the value of some diamonds to set your budget.

Round Brilliant CutRound Cut

 

 

Fancy Cuts

OvalOval

 


Asscher
Asscher

 


RadiantRadiant

 

 


Emerald Cut
Emerald Cut

 


Cushion Cut
Cushion Cut

 


Heart
Heart

 


Marquise
Marquise

 


Pear
Pear

 

2-Get some inspiration

GIA Pear Shape Vintage Style Milgrain Halo Diamond Ring, SKU 28109R (1.30Ct TW)
1.00 ct pear shape diamond Halo ring, set with  a Milgrain setting and four single prongs securing the center diamond, Available in platinum & in 18K gold  The appearance of the final product may vary slightly from the images shown. For more information about this item please visit here
1.00ct. GIA Oval Classic 4 Prong Solitaire Ring, SKU 28102R (1.00Ct TW)

A classic four prong basket cathedral solitaire ring. The ring is set with a 1.00Ct Oval diamond, and styled with a tapering shank towards the head. Available in platinum and 18k gold The appearance of the final product may vary slightly from the images shown. For more information about this item please visit here 

 

1.00ct Round Brilliant Diamond Cross-over Side-stone Diamond Ring, SKU 28164R (1.28Ct TW)

A lovely 1.00ct Round Brilliant Diamond Cross-over Side-stone Diamond Ring, set in a 4 prong setting and mounted in 18K White gold. The ring is styled in an open Pave crossover setting. The appearance of the final product may vary slightly from the images shown. For more information about this item please visit here 

 

White & Pink Halo Diamond Ring, SKU 26801R (1.60Ct TW)

Of beauty and grace…a white cushion and pink diamond double halo ring, mounted in Platinum & 18K gold. The center diamond is a GIA certified 1.0 Carat cushion shape. The inner halo is set with Fancy Light Pink round brilliants, mounted in 18K rose gold. The outer halo and shank are set with white round brilliants, mounted in platinum.  The appearance of the final product may vary slightly from the images shown. For more information about this item please visit here 

3-Get familiar with the 4C’s

CUT

Cutting is what brings a diamond to life, but not all cuts are equal. Diamonds are unique in shape and size, and value is judged by both the shape and quality of the cut. Princess Cut and Brilliant Round Shape are popular choices. Other common shapes include Cushion, Emerald and Asscher. The angles of the facets, as well as the overall symmetry, can impact the value of your diamond.

COLOR

The body color of your diamond is determined by comparing the diamond you send with a set of Master Diamonds. Our gemologist assesses your diamond in your favor against the set of master diamonds. Colors range from D (colorless) to Z (light yellow), with D being the most valuable. Some diamonds—considered “fancy”—defy this scale, and they can be worth more per carat than even a colorless diamond.

CLARITY

The clarity of your diamond is graded using a Gemological Microscope at 10x magnification. This close inspection ensures the greatest and most accurate value. The clarity simply defines how many inclusions or imperfections the gem has.

CARAT WEIGHT

The carat weight of your diamond is measured using state-of the art scales to ensure precision and accuracy. For more in-depth  about the 4C’s please visit here

4-Put it together

Now that you have a plan to buy a diamond ring and you have all the information that needed to go out there to the stores or better yet go online look for a similar style rings are going for. And you also know that the size, color, clarity, and cut are all affect the value of the stone. Furthermore, setting style will look on your finger. Similarly you can see how a potential wedding band will look next to it, especially if you are planning on wearing the two together and are considering a detailed engagement ring. Ask someone whose opinion that you can trust so that you can get the honest opinion about the engagement ring.

Keep in mind that your budgets and availability do vary by styles so please allowing some wiggle room will help. As long as you know the ball park of the ring that you want you can play around with the size, color, and clarity, but you want to keep the CUT at least very good cut grade. Hope this article helps you make the right decision in purchasing your diamond engagement ring!

 

recommended gold buyer

Looking to sell your unwanted gold jewelry?

We, recently, researched and come across the Best National Gold Buying Website called ExpressGoldCash.com

We spent days doing the researches on this company to see what are so great about it that customers from all over the States have been talking about ExpressgoldCash.com from the beginning requesting the kit to the end getting paid. From start to end the process is  unbelievable simple process and quick payment. Let me explain it to you 3 easy steps to sell your unwanted gold jewelry with ExpressGoldCash company;

1. Request a Free Kit

Simply fill out the “Request a Kit” form. You will immediately be mailed a free Express Gold Cash kit with a prepaid FedEx envelope and instructions on how to safely send in your items and sell your unwanted gold jewelry for  quick cash. And your Free appraisal kit will arrive within 3 to 5 business days. and your Free appraisal kit contains these;

 

Your Kit, outer envelop

 

Inner folder

 

Prepaid Fedex envelop

or

 

Customer information card

 

10% bonus

 

Premium quality Poly bubble mailer

 

Thick zip top plastic bag 6×8

 

2. Ship your items for Free

ExpressGoldCash  provides a pre-paid FedEx Overnight label and a list of nearby authorized locations for drop-off. Your kit will be insured for up to $5,000 and tracked from the moment it leaves your hands, ensuring they receive it on time and intact. Remember to keep your FedEx receipt!

    A. Once ExpressGoldCash receives your Gold Kit, it is immediately scanned into their system and a confirmation email is sent.

    B. An evaluator individually opens each pack and verifies that the items sent match your inventory list.

    C. ExpressGoldCash calculates the total cash value based upon the type of material, weight, and the daily price of gold and email you an offer for              approval.

3. Get paid in 24 hours/receive your cash

Accept ExpressGoldCash offer, and receive your payment within 24 hours. should you decide to sell your unwanted gold jewelry to EGC, you will have three options of payment; Check, Direct Deposit, or PayPal. for fastest payment, please choose direct deposit or Paypal. If you decline their offer for any reason, they’ll immediately send your items back to you free of charge, no questions asked. On top of that they also match any offer from the national online competitors—and pay you an additional 10%!

For competitors’ offers of $1,000 or more, they’ll match the offer and pay you an additional $100.

Competitive offers must be received within 10 days of mailing the same items to Express Gold Cash for evaluation. To qualify for price matching, you must provide them with written documentation of the competitive offer before they make their offer.

Satisfaction Guarantee, i mean your satisfaction is guaranteed when you sell your gold jewelry items to ExpressGoldcash

There’s a reason they’ve been the leading cash-for-gold service for almost two decades. they offer honest, reliable service, and they value each and every relationship that they build with their customers.

Most cash for gold websites simply send a check for the amount they are willing to pay for your gold and process your belongings before you ever have a chance to change your mind.

At ExpressGoldCash.com, they value your business and are committed to making you the best offer for your gold. You’ll receive their offer via email within 24 hours of their receipt of your items, then you’ll have the option of accepting or declining their offer.

Accept it, and receive your money within 24 hours. Decline it, and they’ll send your items back free of charge, no questions asked. It’s that easy!
And below is the Express gold cash banner Logo.
 
We want to share with you their banner logo when it comes to sell your unwanted gold jewelry and make sure that you are visiting the right website. ExpressGoldCash short for EGC receives  positive reviews from customers and below are few testimonials from Express Gold Cash website for you to read;
year ago
    Express Gold Cash is an exceptional company. They are professional and kind every time I speak to them. The prices they pay for jewelry are amazing. You can trust this company to do what they say. I have been happy with every offer they have given me for my jewelry because the payouts were perfect. I have sent them my jewelry again and again, and I will continue to do so. The site is easy to navigate too. Express Gold Cash should be your first choice to use for selling your precious jewelry. I give this company 5 STARS and they get an A+ from me.
year ago
     I would highly recommend using Diamond Buyers International. They were professional throughout the entire process. Soon after submitting my request for a kit to be mailed to me I was contacted to make sure I received my kit in the mail and if I had any questions. The kit was complete with all the items I needed to securely send my ring to their location in New York. It even listed all the check points that my ring would travel through in order to reach its final destination. Demetri, my contact, reached out to me that my ring had been received and that he would have a quote to me shortly. Demetri was extremely helpful and easy to reach throughout the entire process. Thank you for all you help!
year ago
     Fantastic process here! The Gold Pack process is very simple and the prices paid for your items are highly competitive. I have used EGC for several years and have only had positive experiences with service and payment. Highly recommend!
You may read more testimonials about Express Gold Cash here

 

 

The World’s diamond deposits

For centuries, India was known as the world’s only source of diamonds. Then Brazil alluvial deposits were discovered in the 1700s. But both countries were over shadowed by South Africa’s enormous primary deposits, which appeared in the late 1800s. Today, because of advances in exploration technology, diamond deposits are no longer limited to one or two places.

New diamond sources came to light in the late 1900s. Canada yielded some especially promising discoveries. These development indicate that the world’s supply of diamonds will satisfy consumer hunger for more decade to come.

 

South America

About 1730, Brazil replaced India as the world’s main source of diamonds. It kept that position until 1870, when production started in South Africa. Because Brazil is a country with wet, tropical climate, century of water erosion uncovered most of its diamond pipes and washed away their surface indications. As a result, Brazil’s diamond supply is exclusively alluvial. In fact, kimberlite pipes weren’t discovered there until 1968, and none have yet proven to be economically diamondiferous. Brazil is mined mostly by individuals or small groups.

Other part of South America, like Venezuela and Guyana, also yield all alluvial diamonds. Mining began in the early 1900s, but advances in mining technology made the 1900s the most productive years. Most of the yield from both locations has been industrial grade, with a few notable diamond, which they called El Liberdador. Other gem-quality diamonds from Venezuela include a rainbow of fancy colors: pinks, blues, greens, and even some black diamonds.

 

Africa

The african continent has a wide range of geographic features-mountains, plain deserts, rain forests, and seashore. Underlying it all are several archons, the oldest and most potentially diamondiferous of geologic structures. It’s no wonder Africa has the most diverse diamond sources. Its enormous pipes are legendary in the diamond industry. Its alluvial supplies are plentiful. And its marine deposits are abundant and hold great promise for the future.

 

South Africa

Diamonds were discovered in South Africa in the late 1800s. At first, all South African diamonds came from alluvial sources. But once prospectors un earthed the first major diamond pipes, primary sources joined the secondary ones. White the country no longer leads the world in diamond production, it’s still a very important source. The first deposit, discovered between 1869 and 1871, were clustered around the town of Kimberly. The mines that resulted formed the basic of De Beers consolidated Mines Ltd., and marked the birth of the modern diamond industry.

Those early South African mines produced about 2 to 3 million carats a year-about 95 % of total world production-from 1872 to 1903. Amazingly, four of those mines  are still operating, although their supplies are dwindling. Today, their combined total is only about 0.7% of the world production.

Currently, the production in South Africa is almost 90% from kimberlite pipes. Three of the most important are Cullinan, called Premier when it was established in 1903; Finsch, established in the mid 1960s; and Venetia, established in 1991. The Cullinan mine has produced hundreds of diamonds weighing 100 carats or more: One quarter of all diamonds over 400 carats from this deposit. It’s also known for producing some rare and valuable blue diamonds.

The mine gained international fame in 1905 when the world’s rough diamond-the Cullinan was discovered. Named after the mine’s owner, this giant rough weighed 3106 cts. The Cullinan retains the title as the largest gem diamond ever found. A 599-ct rough crystal found there in 1986 was fashoined into the 273.85-ct Centenary Diamond, named to commemorate De Beers’ 100th anniversary.

 

The Cullinan Diamond

The big pear is the Cullinan!

 

Finsch mine was worked as the open pit site until 1990 when it was converted to an underground operation. It holds the distinction of being the most technologically advanced underground mine in the world. It features state-of-the-art automated and remote-controlled ore handling, transportation, and rock crushing system.

Venetia is South Africa’s newest and perhaps most significant mine. Discovered in the mid 1970s, it went into production in 1991. The Venetia produces between 4 to 5 million carats of diamond annually, about 40% gem quality. The total volume of diamonds and the high percentage of gem-quality stones rank the Venetia as one of the top mines in the world.

 

Africa’s Atlantic Coast

One of the world’s most important marine deposits lies along the Atlantic coast of Africa, in the country of Namibia. Mining of marine diamonds stared there in 1909, when it was still known as German Southwest Africa. There were no diamond bearing pipes near the shore, so geologists believe that the diamond came from the kimberlites in South Africa’s interior. As the Kimberlites eroded over the past 100 million years, the diamonds in them were washed into nearby waterways. From there they drained into ancient branches of the Orange River, which carried the diamonds west to the Atlantic ocean.

Tumbled and battered for centuries by stream, rivers, and ocean tides, the industrial grades and heavily included stones broke up and disappeared. As a result, a large percentage of the stones mined from the beaches are gem quality. The largest mining company in Namibia is Namdeb Diamond Corporation-a partnership between De Beers and the Namibian government. Other mining companies in Namibia include DBM.

As diamonds on shore begin to diminish, advances in ocean-mining technology are making it possible to dredge deeper, both near the coast and in the deep seeas offshore. This should keep Nmibia producing for many years to come.

 

Central Africa

The inland countries of central Africa-Botswana, Angola, and the Democratic Republic of the Congo, formerly Zaire-are also participants in Africa’s diamond trade. Of the three, onlyBotswana has a sizeable yield from primary sources.The country has two of the largest known kimberlite pipes, Orapa, and Jwenang. Botswana’s third mine is the Letlhakane. All three mines are open=pit operations. Debswana, a joint partnership between Botswana government and De Beers, operate them.

Orapa, began operating in 1971, is located in the northern region of Botswana. And currently the largest economically important kimberlite pipe in the world, yield over 6 million carats  per year.

Jwaneng, was started in 1982 in the Kalahari Desert in the southern of Botswana. Despite its name, which means ” a place of small stones,” the mine provides approximately 22 % of the world diamond production by value-about 1.5 billion. And, at an estimated 12.7 million carats covered in 1998, it ranks as the  third largest producer in terms of total carats per year.

The two smaller pipes located about 30 miles from the Orapa site make up the Letlhakane mine operation, which started production in the 1976, although production volume from this mine is about 1 million carats per year-considerably less than Orapa’s output-the ratio between gem and industrial stones is impressive :80% gem, 20% industrial.

Diamond in Republic of Congo and Angola are almost all alluvial, but mines there are plagued by illegal diggings and unstable politics.

 

West and East Africa

The diamonds from West Africa are almost all Alluvial. In Guinea, diamonds are found in scattered deposits in the tropical rain forests that cover the country. In Sierra Leon, diamonds are found nearby everywhere, and about 70%of them are gem quality.  In certain portions of Ghana, the richness of the yield is almost unbelievable ; one 160-acre plot once yielded about 3 million carats. but the stones are very small, and about 90% are industrial grade.  In Tanzania, a country of Eastern Africa , Canadian geologist John Thorburn Wiiliamson spent years searching for the rich pipe deposits he was convinced were there. Finally, he discovered an enormous pipe at Mwadui, where serious production began in 1945. Most of the richer sectionwere mined out by the mid-1990s, but mine is producing again, and over half the total putpu is gem quality.

 

 

Diamond colors

The Origin of color grades

Color is a defining factor while valuing diamonds. It can range from colorless to yellow, brown,  and so on. The more colorless a diamond, the greater its rarity and value. The individual colors of diamonds were classified and described very early on. In the United States, the country with historically the biggest share of the diamond market, a system of diamond grading was first devised at the start of the 1930s with its own terms for color designation.

The various names of colors, which originated from the then newly discovered sources in South Africa, are still known even today as the “old terms”. These were replaced over time in the USA and in other countries by figure-based or letter-based systems as well as by other descriptions. The “old-terms” were based on a colorless to cape series including ten color grades with imperceptible transitions:

  • Jager
  • River
  • Top Wesselton
  • Wesselton
  • Top Crystal
  • Crystal
  • Top Cape
  • Cape
  • Light Yellow
  • Yellow

Most of the old terms are derived from the names of former diamond mines, without defining the color grade more precisely.

The term Jager comes from the name of a South African diamond mine the Jagerfontein Mine. This mine yield the very finest blue white diamonds. In the first attempts at a definition of color, however, it was realized that the color stage Jager did not represent a slight blue suffusion but that the visible bluish coloration present was caused by another phenomenon; fluorescence. It was observed in fact that some diamonds exhibit different color hue in daylight and artificial light, and it was deduced from this that the weak blue hue arose from a concentration of ultra-violet rays in natural daylight. The term “Jager” as a description of the highest color grade was therefore removed from the scale and River took over first place. For diamonds which were found in rivers and alluvial deposits, the term “River” was adopted. These stones were usually very transparent and better color than diamonds found in pipes.

 

In the 1950s GIA established a color-grading system for diamonds. Because many of the color-grading systems that came before t used vaguely defined trade terms, GIA wanted its system to clarify the color-grade categories. In the beginning, GIA planned the system so that only jewelry professionals would use it.

They started the scale with the letter ‘D’ hoping that the letter’s poor reputation in the American school grading system would keep it from being used with customers. Today, professionals and consumers alike use the GIA Color Scale. It has maintained its reliability and become the most widely recognized and well-respected color-grading system in the world.

To provide a basis for color comparison, GIA assembled a set of MASTERSTONES. It took years to find diamonds that represented all letters in the GIA color-grading system. Since the 1950s, additional masterstone sets have been assembled by carefully matching them to the original set. This has helped the consistency and accuracy of the GIA system.

 

The masterstones represent known depths of color, ranging from colorless through gradually deepening tints of yellow. Masterstones graded as whole grades, such as H or I, represent the least amount of color in that grade. In addition to grading the color of diamonds, other factors such as the Shade/Hue, inherent Fluorescence in a diamond, as also its color, are factors that can have an influence on the overall color of a diamond, and are therefore critical to the grading too.

The GIA Color Scale

The GIA color scale begins with the letter D (colorless) and continues through the alphabet to Z (light yellow, brown, or gray). A diamond color grade is based on its tone and saturation and requires an assessment of its absence of color.

 

where to sell my luxury watches online?

Where to sell watches online?

 

Are you ready to sell your luxury watch for cash or upgrade to the new style but not sure or don’t know where to start? There are a lot of places online that buy luxury watches. The first question comes to your mind is “Can i trust them to sell my watch to?”. While you can look for the local jewelry and watch buyers. You will most likely running out your of options. Selling your luxury watch online for cash is the best option and save time and at the convenience of your home, quick, secure, and confidential.

The best place to sell watches

We have researched and reviewed these Top online buyers.

Reputation

 

These companies must be accredited and rated at least A to A+ by Better Business Bureau is known as BBB, and have credible online customers/testimonials previously and currently. And please be sure to read their reviews on Google+ and FaceBook. Our #1 pick for luxury watch buyers is WP Diamonds.  And our #2 pick falls onto DBI, diamond Buyers international

 

Competitive Prices

 

Look for online luxury watch buyers who are truly  experts in their field. And have a long outstanding reputations and connections in luxury watches. Pricing a luxury watch requires an experienced luxury watch professional with the knowledge in the industry.

 

Secure/insure

 

It is very very important that you feel comfortable when sending your watch and every step in the process of selling your luxury watch. When request a free kit to send in your luxury watch make sure that the kit  is insured and free of charge to mail, Fedex overnight trackable. And WP Diamonds provides you with Free Fedex overnight and fully insured. Even if you decline the offer WP Diamonds will mail your watch back to you with all the same safety measures for free. And they also have appointment available incase you need to the experts face to face in a safe secure modern environment.

 

Speedy payment

 

Quick pay is really important. You want to have  payment options, check, wire transfer, PayPal or cash (by appointment only) within 24 hours right after the final offer accepted.

Both of these online luxury watch buyers have A+ rated by BBB company and Google+ reviews, and have long outstanding reputation, WP Diamonds has expert watch buyers available for appointments in New York, Dallas, LA, and Chicago, and you can also opt to send your luxury watch in via their Free fully insured overnight Fedex trackable shipping service.