Black Spinel 2-3x5-6mm Faceted Irregular Tyre Beads - 8-Inch Size_18x25-20x30mm It is known for its

It is known for its abstract designs in rusty red

some with subtle hue changes and others with high contrast

** Yellow quartz is thought to enhance clarity

initially as tools because of its hardness

There are 2 specimens pictured to show that there are variations in the size and color

Black Spinel 2-3x5-6mm Faceted Irregular Tyre Beads - 8-Inch Size_18x25-20x30mm It is known for itsSpinel 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.