251.5cts - BIG Rare Tribal Black Boulder Opal Polished Specimen Rough Opal in Bulk blue and yellow colouration in

blue and yellow colouration in a broadflash pattern

Perfect for an artistic Ring stone

Quantity - 5x solid Opal stones

Opal Weight - 1

Buy the 3 and request a substantial discount

251.5cts - BIG Rare Tribal Black Boulder Opal Polished Specimen Rough Opal in Bulk blue and yellow colouration inA rare Australian Boulder Opal Tribal Specimen from the Koroit nut formation. This stone displays vibrant red, orange, blue and green colouration contrasting with rare black ironstone and desirable white potch opal in tribal patterns unique to the area. Cut to a large freeform high dome cabochon with a quality finishing polish. Perfect for display! *This stone unfortunately is not very photogenic as is typical of tribal or pinfire patterned stones,