• A large opal stone showing blue seams
  • A polished oval opal gemstone with a dark reddish-brown base and vivid iridescent blue, orange, and gold flashes, resting on a textured beige fabric background.
  • A polished oval gemstone with a marbled pattern of deep red, black, brown, and cream, resting on a textured beige fabric background.
  • A polished oval cabochon gemstone featuring a rich marbled pattern of deep burgundy, black, gold, and subtle iridescent blue-purple veins, resting on a textured beige sand surface.
  • A polished oval cabochon gemstone featuring a marbled pattern of deep red, black, and orange with subtle blue iridescence, resting on a textured beige sand surface.
  • A large opal stone showing blue seams
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Georgie's Gem Studio

Large Boulder Opal Cabochon - Swirl Matrix Pattern

Large Boulder Opal Cabochon - Swirl Matrix Pattern

£69.00 GBP
£69.00 GBP
Sale Sold out
Taxes included. Shipping calculated at checkout.

The Ancient Map - Somewhere between purple dusk and green dawn, ironstone holds a secret - a swirling, ancient map etched by time itself. No two paths are the same. This one is yours.

This large solid boulder opal cabochon features an intricate swirl matrix pattern across a polished oval surface.

The flat back and low dome make it ideal for setting, wire‑wrapping or keeping as a collector’s specimen.

The 35 × 18 × 3 mm stone shows purple and green pinfire with brightness 3, adding gentle flashes of colour against the ironstone base.

A miner‑direct cabochon with beautiful natural detailing and a smooth, glossy finish. 

  • Opal Type: Boulder Opal 
  • Format: Solid 
  • Colour: Purple, Green 
  • Pattern: Pinfire with swirl matrix 
  • Shape: Oval 
  • Finish: Polished 
  • Brightness: B3 (of 5) 
  • Stone Dimensions: 35 × 18 × 3 mm 
  • Weight: 7 g 
  • Back: Flat, low dome 
  • Fitting: None (loose cabochon)
  • Origin: Boulder Opal Fields, Queensland, Australia
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  • About Our Opals

    Every stone is natural, untreated, and individually cut.
    No two opals are ever the same - each piece is one‑of‑a‑kind. We source directly from a small Australian mining family, from ethical and regulated opal fields.

    All photos are taken with a macro lens, remember to check the opal dimensions before purchasing.

  • Why Buy From Us

    We only work with Australian opals. Every opal is sourced directly from a small‑scale Australian mining family who work with integrity, fairness, and respect for the land. Ethical sourcing and environmental responsibility matters to us.

    We want you to be delighted with every purchase, so please read our policies or contact us if you want to find out more:

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