Aquamarine 3mm Table Cut Cube A Grade Bead - 15-16 Inch Size_10-15x16-23mm Spinel is a hard vitreous

Spinel is a hard vitreous magnesium aluminum oxide

It is a natural glass made up of pure silica

Olive Jade is the commercial name for this yellow to green to olive green stone and ranges from translucent to opaque

Famous malachite mines in the Ural mountains of Russia once produced 20-ton blocks of the stone

black biotite

Aquamarine 3mm Table Cut Cube A Grade Bead - 15-16 Inch Size_10-15x16-23mm Spinel is a hard vitreousAquamarine 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.