Black Spinel 4x6mm Faceted Rondelle - 15-16 Inch (dyed) Naturally occurring in hues of

Naturally occurring in hues of blue-green to green with spots and streaks of red

including Diamond

was inspired by the stone and chose it for the interior decorations of Marlborough House in England

the Dalmation dog breed

It forms when Quartz and Feldspar crystallize in radial aggregates within other silica-rich stones

Black Spinel 4x6mm Faceted Rondelle - 15-16 Inch (dyed) Naturally occurring in hues ofSpinel is a hard vitreous magnesium aluminum oxide, and comes in a range of other colors, but those varieties are transparent. Black Spinel not only has the dark color, but it is opaque as well, rendering its black especially deep and mysterious. Sometimes called the "Black Prince's Ruby" for its role in the English crown. It has been mistaken for ruby and sapphire at times, but can be distinguished by its structure and its lower relative hardness.