RARE Natural Gem Sillica Conception Del Oro Druzy Cabochon 15x17mm
Gem Silica from Concepción del Oro, Zacatecas, Mexico, is a highly coveted "old stock" material, with much of it mined in the 1980s. . Known for its vivid, robin's-egg blue to green color, this rare, copper-infused chalcedony is found as cabbing rough, often displaying high translucency (gemminess) and occasionally containing inclusions of malachite or conichalcite
