Black Spinel 4mm Faceted Round - 15-16 Inch Namibia Madre de Cacao is a

Madre de Cacao is a very hard tropical wood with a visible grain

among other numerous names

with inclusions that appear in patterns similar to moss or lichen

the colors are naturally occurring

Black Spinel 4mm Faceted Round - 15-16 Inch Namibia Madre de Cacao is aSpinel 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.