74.4cts - Awesome Tribal Yowah Nut Opal. Australian Opal Picture Stone 300+ct A large Australian Boulder Opal

A large Australian Boulder Opal cut from a Koroit Nut

This gorgeous stone displays vibrant blue and green colouration in transparent crystal opal contrasting wonderfully tan ironstone

with faces of vibrant orange

Stone displays predominantly vibrant blue and green colouration in flag patterns

Lapidary Hobbyists and enthusiasts looking for Lightning Ridge Opal material

74.4cts - Awesome Tribal Yowah Nut Opal. Australian Opal Picture Stone 300+ct A large Australian Boulder OpalA beautiful Australian Boulder Opal from the Yowah nut formation. This stone displays blue and green colouration contrasting with tan earth tones in tribal patterns. Cut to a freeform cabochon with a quality finishing polish. Total weight 74. 4cts approx. Area of Mine Yowah, Outback Queensland, Australia Dimensions 38. 2mm x 25. 4mm x 9mm approx. Formation Yowah nut Shape Freeform Colours blue, green