23.3cts - BANGER Yowah Nut Crystal Centre Opal. Polished Specimen black boulder opal Solid Semi Black Crystal Opal

Solid Semi Black Crystal Opal from Lightning Ridge

Opal displays vibrant green and blue colouration

solid Queensland Boulder Seam Opal from Winton

An artistic Tribal Boulder Opal from Koroit

Cut to a desirable bean like high dome double sided oval cabochon

23.3cts - BANGER Yowah Nut Crystal Centre Opal. Polished Specimen black boulder opal Solid Semi Black Crystal OpalA beautiful Australian Boulder Opal Specimen from the Yowah nut formation. This stone displays vibrant red, orange, yellow, blue and green colouration in a crystal centre semi framed by dark ironstone. Cut to a freeform shape with some facial inclusions, priced accordingly. Total weight 23. 3cts approx. Area of Mine Koroit, Outback Queensland, Australia Dimensions 24. 9mm x 11. 8mm x 7. 7mm approx. Formation Koroit nut Shape Freeform Colours red,