gemology |
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| navigate by keyword : gemology microscope gemstones laboratory analysis science gem expert color clarity cut carat mineral jewelry research equipment identification sparkling synthetic natural tools illumination magnification specimen optical properties testing gemstone features facets inclusions rare gems analytical techniques grading recognition bench jewelers diagnostics lab precious stones geology market ornamentation professional craftsmanship gemological institute |
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| Gemology microscope and gemstones in the laboratory. The science of gemstones. |
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