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Gem Gardens
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Gem Gardens
Gemstones and Minerals
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The relationship between gemstones and their formation environments
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Physical Properties of Gemstones
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Common Gem Stones
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Gemstone Grading: the 4Cs

Since most precious stones are rare and highly desirable, their market values are determined by a set of evaluation criteria known as the 4C – Carat, Clarity, Color and Cut. This system is used ..........

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Common Jewelry Cuts
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Common Methods of Gemstone Authentication
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