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"Gem" doesn't really have a formal definition, it's basically any pretty-looking rocky thing. Diamonds and such are unambiguously gems, turquoise and onyx and the like probably are, and things like pearls or amber (both biological products) can be, depending on who is saying it. The word that specifically refers to the molecular structure is "crystal."
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# ¿ Feb 8, 2014 02:57 |
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# ¿ May 22, 2024 14:45 |