Black Spinel 5mm Round - 15-16 Inch Special-Tucson-Buy-2025 Stones will vary by inventory

Stones will vary by inventory

creamy white to pale gray or beige

and Side Cutters

Black Eye Agate is a variety of Sardonyx which has a Sard base

but those varieties are transparent

Black Spinel 5mm Round - 15-16 Inch Special-Tucson-Buy-2025 Stones will vary by inventorySpinel 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.