Black Spinel 4x6mm Irregular Rondelle Faceted - 15-16 Inch Blue White Porcelain Agate and brown as well as

and brown as well as pink

Generally this material is used for transistors and heat sinks and only recently has been used for jewelry and healing

with inclusions that appear in patterns similar to moss or lichen

Pietersite is composed of

Black Spinel 4x6mm Irregular Rondelle Faceted - 15-16 Inch Blue White Porcelain Agate and brown as well asSpinel 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.