Serendibite
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Physical & Optical Properties
Mohs Hardness
Crystal System
Value & Market
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About Serendibite
Serendibite is an extremely rare calcium magnesium borosilicate mineral, typically dark blue-gray to black in color with a vitreous luster, found in contact metamorphic skarns near Gangapitiya in Sri Lanka (ancient Serendib, from which it takes its name) and in the Adirondacks, New York. Transparent blue-gray facetable material is extraordinarily scarce and represents some of the rarest gemstones cut from this species. Its deep history in Sri Lanka links it to one of the first gem localities known to antiquity.