Search Results - "gemstone"

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  1. 1
    National Geographic Readers: Rocks and Minerals

    National Geographic Readers: Rocks and Minerals by Kathleen Weidner Zoehfeld

    Published 2012
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  2. 2
    Resources Gemstones And The Environment

    Resources Gemstones And The Environment

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  3. 3
    PHOTOATLAS OF INCLUSIONS IN GEMSTONES

    PHOTOATLAS OF INCLUSIONS IN GEMSTONES by GUBELIN, E

    Published 1997
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  4. 4
    GEMSTONES OF THE WORLD

    GEMSTONES OF THE WORLD by SCHUMANN, W

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  5. 5
    GEMSTONE ENHANCEMENT

    GEMSTONE ENHANCEMENT by NASSAU, K

    Published 1994
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