Opal Brightness Explained
Opal brightness is graded on the B1–B5 scale, where B1 is very dim and B5 is vivid and intense.
Georgie's Gem Studio
Large Solid Boulder Opal – Blue, Green & Orange Pinfire (Double‑Sided)
Large Solid Boulder Opal – Blue, Green & Orange Pinfire (Double‑Sided)
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The Wildhide Triangle - A large boulder opal with a soft animal‑skin pattern across its triangular face, its gentle blue‑green‑orange pinfire glowing through the warm ironstone like colour woven into natural hide.
This large polished boulder opal shows gentle blue, green, and orange pinfire across its triangular surface, with colour visible from multiple angles thanks to its double‑sided finish.
The natural ironstone matrix adds warmth and grounding, giving the stone that classic boulder opal texture and depth.
With brightness 2, the colour play is soft and subtle, making it perfect for earthy, organic jewellery designs or as a collector’s display piece.
Its generous size and smooth polish give it real presence, while the freeform triangle shape adds a unique sculptural feel.
Sourced directly from the miner - a one‑of‑a‑kind Australian opal with natural charm.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: Blue, Green, Orange
- Pattern: Pinfire
- Shape: Triangle (freeform)
- Finish: Polished
- Brightness: B2 (of 5)
- Stone Dimensions: 35 × 21 × 6 mm
- Weight: 12 g
- Back: Double‑sided with ironstone matrix
- Fitting: None (loose stone)
- Source: Miner‑direct
- Origin: Boulder Opal Fields Australia
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About Our Opals
We only work with Australian opals, direct from #MinerToMaker.
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 small Australian miners and cutters.
Every opal comes from Queensland’s ethical, regulated opal fields.
All photos are taken with a macro lens, remember to check the opal dimensions before purchasing.
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Stories from the Studio
Read our latest posts -
Ethical Opal Sourcing
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Caring for Australian Opal
A simple guide -
Opal Brightness Guide
Judging brightness