251.5cts - BIG Rare Tribal Black Boulder Opal Polished Specimen



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A 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, please be aware that this piece displays a good 30%-50% better in real life!

Total weight - 251.5cts approx.

Area of Mine - Koroit, Outback Queensland, Australia 

Dimensions - 38.1mm x 36.8mm x 24mm approx.

Formation - Koroit nut

Shape - Freeform

Colours - red, orange, blue, green 

 

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Wir sind australische Opalbergleute und verkaufen australische Produkte in australischen Dollar.

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