Faceted 4 mm Blue Goldstone. The color is a very dark blue, almost black with quartz-like and coppery sparkles present. Approximately 50 beads per strand.
Blue Goldstone is made of quartz sand, which is melted with copper or copper oxide in a flame at about 1,250 ° C – and it is only the copper added during the production. Blue Goldstone is often used as a replacement for natural aventurine.