Beryl

#7.5 to #8 on Mohs scale, poor to good toughness. Sources are Colombia, Afghanistan, Brazil, Pakistan, Russia, Zambia. Colombia is one of the largest commercial producers of emeralds. Fine Colombian emeralds are highly regarded for their excellent color. Zambia, a major commercial source, as well. Zambian emeralds tend to have good clarity. Zimbabwe, the Sandawana Valley …

#7.5 to #8 on Mohs scale, good toughness. Sources are Brazil (major source), Australia, China, Kenya, Madagascar, Mozambique, Nigeria (known for intense color under 5 carats), Pakistan, United States, and Zambia. Aquamarine’s cool blue hues are reflected in its name, which comes from the Latin for “sea water” Medieval sages prescribed water touched by aquamarine …