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Definition
| the study of gem materials from their origins to their use in jewelry and ornamentation |
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Definition
| the mining and prospecting of gem materials |
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Definition
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Term
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Definition
| any material which is used for adornment or decoration, especially when cut and polished |
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Term
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Definition
| any gem material which is in its unfashioned state |
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Term
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Definition
| gem materials used for ornamental purposes, including carvings, inlays and even architectural surfaces |
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Definition
materials formed or derived from a living organism
Ex) Amber, pearls |
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Term
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Definition
| not natural or naturally-formed, but man-made |
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Term
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Definition
| a combination of hardness, toughness and stability |
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