Black Spinel 8mm Faceted Round - 15-16 Inch R1738 Botswana Agate was formed nearly

Botswana Agate was formed nearly 187 million years ago by lava flowing in waves from long faults in the earth

the third to hardest common natural gemstone

It's defined by a bright green color

pattern and finish of the original DZI beads

It also assists in setting a pace and staying with that pace all day long

Black Spinel 8mm Faceted Round - 15-16 Inch R1738 Botswana Agate was formed nearlySpinel 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.