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Husband and wife gaze happily at emerald rough found in a Colombian mine.
Pearls, shells, and jewelry on table
 Hand holding tube-shaped boulder opal
Hands holding sapphire
 Large open mussel shell with pink interior
Handful of opal
Indian necklace
Colored Gems – Mine to Market
Worker attaching wax forms

零售商资源
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在校区商店购物
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品质保证基准
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Gems & Gemology
G&G Summer 2017 Edition
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