Goldstone 1x2mm Square Rondelle - 15-16 Inch 4x2.5mm Brazilian Amazonite is an opaque

Brazilian Amazonite is an opaque blue-green to light green stone

Terahertz is a spectacular man made ore

and has been discovered with artifacts from cultures of the Neolithic Period

pink and mauve

it has often been used as a substitute

Goldstone 1x2mm Square Rondelle - 15-16 Inch 4x2.5mm Brazilian Amazonite is an opaqueGoldstone is a manmade material, consisting of opaque rust to red glass with tiny flecks of glittering copper suspended within it. 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.