Goldstone Pi Stone Pendant

Goldstone is a brilliant sparkling glass available in reddish-brown, blue, purple and green. Soda-lime glass containing copper salts is melted in an oxygen depleted environment, and the copper salts decompose to create glittering metallic copper crystals throughout the glass. Green goldstone is made using chromium salts which create silvery crystals. Folklore suggests goldstone was accidentally discovered by medieval Italian monks practicing alchemy, but it was probably developed by Venetian glass makers in the 17^th century.