Nuummite Oval Cabochon - Greenland
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A beautiful, small cabochon of authentic Greenland nuummite that contain a glossy, rich, black color.
Nuummite is a gemstone formed from a mixture of two minerals from the orthoamphibole group: anthophyllite and gedrite.
Geologically speaking, nuummite is of volcanic origin and was formed about 3 billion years ago. Subsequent influences on the rock (metamorphism) have given rise to the striking mixture of crystals which gives nuummite its unique appearance