Green Goldstone 4mm Round - 15-16 Inch Stone Type_Jet The blue color

The blue color

or subject it to pressure

The antibacterial properties of shungite have been confirmed by modern testing

Golden Obsidian is a naturally occurring volcanic glass

which occurs in many colors

Green Goldstone 4mm Round - 15-16 Inch Stone Type_Jet The blue colorGreen Goldstone is an opaque, almost black glass with flecks of copper suspended within it. These flecks glitter as they catch the light and appear green against the dark glass. Goldstone was first created during the Italian Renaissance when, as legend has it, a Venetian monk tipped molten copper into a vat of molten glass. When this combination crystallized, the result was glass permeated with thousands of tiny metallic sparkles.