Science, tools, identification, treatment, valuation & grading of gems
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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
Price guidance on over 70 types of gemstones
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Fancy octagon-cut amethyst, 4.90 cts, Brazil. © Dan Stair Custom Gemstones. Used with permission.
Article: Gem Pricing Advice for Faceters
Credit: Dan Stair Custom Gemstones