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
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In-depth guides to quality factors of the 40 most popular gemstones
3.04-ct, round-cut verdelite. Photo courtesy of liveauctioneers.com and Jasper52.
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