Black Spinel 8mm Round - 15-16 Inch Shape_Flat Oval In lower grades it can

In lower grades it can be transparent to opaque and is commonly light blue

Its proper name is Artocarpus heterophyllus

The name comes from the French word for lemon

The stone can also include its namesake sage green

Black Spinel 8mm Round - 15-16 Inch Shape_Flat Oval In lower grades it canSpinel 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.