AAA Large Peruvian Blue Opalina Cabochon 28cts
Opalina is a rare, naturally occurring gemstone found in Peru, formed from an opalized blend of chrysocolla (a copper silicate mineral) and opal, giving it unique blue to greenish-blue hues with natural patterns, often cut as cabochons for jewelry. This Opalina is a 35X24X5 mm round 28ct gemstone isâ?¦