The Queensland Boulder Opal is a stunning gemstone with a bi-colour/multicolour appearance, showcasing a unique opalescence effect. This natural and polished gemstone, originating from Australia, is opaque in transparency and eye clean in clarity grade. With one piece available, this cabochon-shaped Boulder Opal is a beautiful addition to any jewellery collection, perfect for those who appreciate natural and unenhanced gemstones. 59.70 ct
eBay