Black Spinel 5mm Round - 15-16 Inch 8-Inch Strands It is a variety of

It is a variety of banded Chalcedony with layers that may contain scarlet

Jade has been used for tens of thousands of years

With the possible exception of the horizon meeting the bright blue sky on a perfect summer day

yellow and white

but its identity is complicated

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