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group are crystallized gems for sale of tourmaline (rubellite, elbaite, indicolite), beryl (aquamarine, heliodor, morganite, emerald), spodumene (kunzite, hiddenite), opal, diaspore, topaz, corundum (sapphire, ruby). these are natural crystals of minerals that are used as gemstones - they are usually not
volborthite vanadinite wulfenite zeolites fluorescent minerals pseudomorphs uncut diamond crystals diamonds $ -$ diamonds $ -$ diamonds $ -$ diamonds $ + diamonds under carat diamonds - carats diamonds - carats diamonds over carats diamond crystal clusters gem-grade diamonds diamonds for jewelry sorted...
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