Amethsyt crystals in marble matrix.This piece came from a mine in northern VietnamOut of the 10 people attending this class only three were working in the trade.As usual, the first class is always the easiest.
Out of about 4000 minerals that have been identified only 90 of them have the beauty and durability to be sought after by man. Out of these 90, 20 are inportant in the trade
We were taught about how Gemstones are grouped according to their similarities of chemical composition.For example under the Corundum group we have 2 species- Rubies and Sapphires.Sapphires come in different varieties like blue sapphires,yellow sapphires and pink sapphires.
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