Opal is ranked at #5 to #6.5 on Mohs scale and very poor to fair in toughness. Sources are Australia—black and white opal, Brazil—white opal, and Mexico—fire opal. Opal is the world’s most popular phenomenal gem. Many cultures have credited opal with supernatural origins and powers. Arabic legends say it falls from heaven in flashes …
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On Valentine's Dat 2014 I had my second bad experience buying diamonds and decided to do something about it. I thought there should be a way to calculate exactly how much a diamond is worth at a jewelry store vs. online jewelry store vs. Craigslist.
