Auction Fall-Through = Your Gain! - Now More Than 50% Off RRP - 465.6cts - “Tribal Drag Strip” Large Tribal Queensland Boulder Opal. Polished SpecimenA large Australian Boulder Opal Tribal Specimen from the Yowah nut formation. This stone displays predominantly blue colouration and potch opal contrasting with tan and dark earth tones in unique tribal Picture Stonepatterns unique to the area. Cut to a large freeform shape. Perfect for display or re cutters delight with serious value add potential To be Polished into finished jewellery style piece s Total weight 465. 6cts approx. Area of Mine Yowah,