Black Spinel 5mm Round - 15-16 Inch HPS_06012023 Naturally occuring in hues of

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

Through this process

but those varieties are transparent

and pattern

” the other being Nephrite

Black Spinel 5mm Round - 15-16 Inch HPS_06012023 Naturally occuring 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.