Gemmology
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Specimens of gemstones by colour: black [gallery view] (Page 2)

Melanite — specimen 0517
Melanite — specimen 0634
Melanite — specimen 0641
Melanite — specimen 0645
Gadolinite-(Y) — specimen 0087
Schorl — specimen 0513
Schorl — specimen 0222

Specimens of gemstones by colour: black — 27
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