Common opal from the same copper-country deposits as pink opal (Acari, Arequipa); blue-green credited to copper, dendrites to manganese oxide. Mohs 5.5 to 6.5. "Multi Peruvian opal" is mixed pink, blue, green and tan common opal.
2 strands in stock: Oval, smooth. Prices are per strand from our latest count; tell us the code and we confirm and send a photo of the strand you would receive.