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
Solid Boulder Opal – Green, Orange & Blue Pinfire (Double‑Sided)
Solid Boulder Opal – Green, Orange & Blue Pinfire (Double‑Sided)
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Snakeshine - A boulder opal with lively green, orange and blue pinfire that flickers across the surface like iridescent scales, the natural ironstone matrix giving it that earthy, reptilian texture that feels both wild and beautifully organic.
This solid boulder opal carries a lively mix of green, orange, and blue pinfire that sparkles across its polished surface.
The natural ironstone matrix gives it depth and grounding, while the double‑sided finish reveals character on both faces - perfect for makers who love stones with personality and versatility.
Its freeform shape and generous size make it ideal for a statement pendant, wire‑wrapped design, or a collector’s display piece.
With brightness 3 and a colourful pinfire pattern, it offers a beautiful balance of vibrancy and earthy texture, all sourced directly from the miner.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: Green, Orange, Blue
- Pattern: Pinfire
- Shape: Freeform
- Finish: Polished
- Brightness: B3 (of 5)
- Stone Dimensions: 33 × 22 × 4 mm
- Weight: 8 g
- 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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More from the Studio
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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