Aquamarine (multi) 8mm Star Cut Round - 15-16 Inch Crystal Dumortierite is an aluminum borosilicate

Dumortierite is an aluminum borosilicate mineral that varies in color from blue

Citrine is a transparent Quartz

In this strand

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

This item is treated and dyed agate

Aquamarine (multi) 8mm Star Cut Round - 15-16 Inch Crystal Dumortierite is an aluminum borosilicateAquamarine is a transparent to translucent stone ranging from cerulean blue to light blue in higher grades. In lower grades it can be transparent to opaque and is commonly light blue, green and yellow with white and gray inclusions. The name is the Latin term for water of the sea. Aquamarine was once thought to be the treasure of mermaids, as well as a lucky stone for sailors.