Koroite Boulder Opal - 15,75ct
Exceptionally beautiful coroite boulder opal with blue opal veins and flashes. The stone measures approx. 22x14x5mm. The gemstone was mined in Queensland, Australia and has a final weight of 15.75ct. This Koroit boulder opal is completely untreated; no treatment has been applied. The item is sold as seen in the picture. Take a look at the video!
