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The Classification Of The Gem
Jan 09, 2017

Gems are single mineral crystal, transparent processed into facets, translucent to opaque often processed into body act the role ofing is tasted, the latter part of the stars and the cat's eye effect. Diamond, ruby, sapphire, emerald, green cat's eye is universally acknowledged the five precious gems, value and collection value, and the rest of the genus low-standard gems. The purpose of the modern gemology according to the latest gem stones can be divided into three categories, respectively is: color gemstones, diamond and jade.