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6-10 of 68 | Previous | Next Click on a thumbnail for a larger image, a description of the piece, and pricing. 6-10 of 68 | Previous | Next |
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Select a gemstone for specific information about the stone: Hardness: Measured by the Mohs scale (1-10), after the mineralogist Friedrich Mohs (1773-1839). Origin: Countries of origin Varieties: Forms, colors, etc. |
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