Black Spinel 3mm Faceted Round - 15-16 Inch 16-inch Round Sale *These beads are "diamond cut"

*These beads are "diamond cut"

These Dakota Stones "DZI" style agate beads are made to resemble beads first found in India between 1000 and 2000 BCE

Opals are hydrated amorphous forms of silica

but it is opaque as well

meaning that their facets were cut using industrial grade diamond

Black Spinel 3mm Faceted Round - 15-16 Inch 16-inch Round Sale *These beads are "diamond cut"Spinel 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.