79.2cts - Top Tribal Koroit Black Nut Opal Rough Opal in Bulk This is truly beautiful example

This is truly beautiful example of a Yowah Nut Crystal centre

A sterling silver (925) Queensland Boulder Opal doublet pendant and ring set

Stone displays a vibrant green and blue in a beautiful flagstone pattern

Australian Boulder Opal Doublet

79.2cts - Top Tribal Koroit Black Nut Opal Rough Opal in Bulk This is truly beautiful exampleA beautiful Australian Boulder Opal from Koroit, outback Queensland. Displaying electric green and blue colouration in tribal patterns unique to the area, on beautiful dark ironstone. Cut to a freeform shape, perfect large Unisex Pendant Size Total weight: 79. 2cts Area of Mine: Koroit, Outback Queensland, Australia Approx. Dimension: 38. 6mm x 24. 2mm x 9. 4mm Formation: Koroit Nut Shape: freeform Colours: blue, green Extras Free International