Tumbled Blue Goldstone / 0.5-1" AVG - 1 KILO LOT

Quantity: 1 kilogram

Average size range: 0.5 to 1 inch

Goldstone is a synthetic glass created by melting silica sand and different metals and metal oxides, with red goldstone using copper and blue goldstone using cobalt. While the earliest recorded recipe for goldstone comes from 17th-century Italy, examples of goldstone jewelry have been found dating back to the 12th and 13th centuries.