Thursday, April 9, 2015

ROCK TRIVIA: EMERALD
Egyptian pharaohs ran emerald mines from 1300 B.C. Emeralds were sent to Europe, Iran, Turkey, and India up until around the 1700's. For thousands of years, almost all Emeralds came from Egypt: this didn't change until huge Emerald deposits were found in Columbia in the 1500's. 
Not only is Emerald is the most precious stone in the beryl group, gem quality emeralds are more valuable than diamonds. More than any other colored gem, color is the biggest factor of value in Emeralds. The most popular and valuable color is a slightly bluish green in a medium dark tone with strong saturation. Too blue or too yellow decreases the value of the stone. The extreme rarity of transparent emeralds is why inclusions in emeralds are accepted. Unlike other gemstones where 10x magnification grades the clarity, if an emerald has no inclusions that are visible to the naked eye, it is considered flawless.
Colombia, Brazil and Zambia are the leading producers of gem quality emeralds, Leading the way, Colombia is famous for grass green emeralds. Brazilian has emeralds with fine clarity and a slightly yellowish green color and Zambian emeralds have a slightly bluish green color. The "emerald cut" was developed for the stone because cut corners reduce the risk of the stone being chipped.
In the picture, The “Mughal”, the most famous carved emerald in history



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