Science, tools, identification, treatment, valuation & grading of gems
Science, identification, classification, and testing of minerals
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List of all gemstones from A-Z with in-depth information for each
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Everything you need to know about buying your perfect diamond
Learn more about these popular gemstones, their meaning & about buying birthstone jewelry
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One of the rarest garnet varieties, demantoid can have a green color that rivals emerald and a fire that exceeds diamond. Demantoids are highly prized by both gem collectors and jewelry enthusiasts.