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Gahnite rough and cut set
Gahnite rough and cut set Gahnite rough and cut set Gahnite rough and cut set
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Gahnite rough and cut set (Ref: LL889)

Kagoro, Kaduna State, Nigeria
6mm x 6mm x 5mm
Rough and cut set of transparent blue Gahnite. Gahnite is the zinc rich end member and one of the rarer species in the Spinel group of minerals. The crystal is a complete octahedron with one tiny chip on one tip, otherwise perfect and translucent to transparent internally. The gemstone is a round just over 3mm wide. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.
From: Marin Minerals
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See Also

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Hambergite (gemmy twinned crystal) - Palelni Mine, Khetchel village, Molo quarter, Momeik Township, Myanmar (Burma)
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Cavansite on Stilbite
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COPPER
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TOURMALINE var. RUBELLITE
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Emerald
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Emerald
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Thomsonite
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Stellerite
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Emerald
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* price is an approximate conversion and may not be accurate.

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