Blue Goldstone 10mm Round - 15-16 Inch 10mm Multi Tourmaline is unusual in that

Tourmaline is unusual in that it is both pyroelectric and piezoelectric

forming Tektite

gray and mauve stone

rich greens

which comes in many forms and color variations

Blue Goldstone 10mm Round - 15-16 Inch 10mm Multi Tourmaline is unusual in thatBlue Goldstone is an opaque, midnight blue glass with flecks of copper suspended within it. These flecks glitter as they catch the light and may appear white against the dark blue of the 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.