Black Spinel 5mm Round - 15-16 Inch 8-Inch Strands yellow and white

yellow and white

2-3 medium ranging 18-25mm

It is highly regarded for its beautiful blue color flecked with gold inclusions of pyrite

but differ in chemical composition

Black Spinel 5mm Round - 15-16 Inch 8-Inch Strands yellow and whiteSpinel 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.