black spinel crystal diopside matrix |
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navigate by keyword : spinel diopside black crystal stone mineral rock natural raw rough unpolished unworked gemstone sample specimen material piece texture surface geological mineralogical collection object macro closeup close isolated cutout cut white background geology gemology gemmology gemological gemmological mineralogy crystalline structure uncut gem zeilanite candite ceylanite spinelite spinella matrix druse cluster |
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close up of sample of natural stone from geological collection - uncut black spinel crystal on black diopside matrix solated on white background |
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