Koroit Boulder Opal | 1.65g | Australia Prosperity The rose hue comes from

The rose hue comes from iron inclusions during crystallisation

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These formations developed as silica-rich solutions slowly deposited mineral material within a cavity

delicate internal patterns created by small fractures during formation that resemble fine feathers suspended within the crystal

Hollandite In Quartz Specimen 14

Koroit Boulder Opal | 1.65g | Australia Prosperity The rose hue comes fromKoroit Boulder Opal 1. 65g Australia A natural Koroit Boulder Opal weighing 1. 65g from Koroit, Queensland, Australia. Each piece is completely unique, displaying natural flashes of colour set within its ironstone matrix. One available. Sold as seen. Koroit is one of Australia's most celebrated Boulder Opal localities, known for producing specimens with particularly vivid and complex patterning. Boulder Opal forms when silica rich solutions fill