Black Spinel 4x6mm Faceted Rondelle - 15-16 Inch (dyed) Hematite is black to steel

Hematite is black to steel to gray or silver to gray

Charoite is a stone that naturally occurs in intense purple hues

It is found only in a four square mile area in a remote mountain range of Chihuahua

Mookaite is a variety of Jasper in colors of red

including Diamond

Black Spinel 4x6mm Faceted Rondelle - 15-16 Inch (dyed) Hematite is black to steelSpinel 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.