Black Spinel 10mm Natural Round - 15-16 Inch Shape_Mala It is a variety of

It is a variety of the mineral corundum

An orthoproxene mineral

pink and mauve

This lava rolled across the landscape

It contains inclusions such as copper and iron

Black Spinel 10mm Natural Round - 15-16 Inch Shape_Mala It is a variety 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.