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
Boulder Opal Necklace – Blue Green Pinfire Freeform
Boulder Opal Necklace – Blue Green Pinfire Freeform
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Atomic - A boulder opal that genuinely feels like an atom with electrons whirling around it, the blue‑green pinfire flickering like tiny charged particles dancing across the surface. And there’s that yellow circle - the “nucleus,” glowing quietly at the centre. It’s scientific‑meets‑earthy in the best way, like nature accidentally carved a physics diagram into stone.
This blue‑green boulder opal necklace features a polished freeform stone with a lively pinfire pattern across the surface.
A natural yellow circle adds a unique touch of character. Ethically sourced from a miner in Queensland, this piece captures the organic charm of Australian boulder opal.
With a brightness level of 3 and a smooth polished finish, the colours shift gently in the light, making it an easy everyday piece.
The stone is drilled and fitted to a leather cord, giving it a relaxed, earthy feel perfect for casual wear or gifting.
A one‑of‑a‑kind Australian opal necklace ready to find its new home.
- Opal Type: Boulder Opal
- Style: Drilled freeform pendant
- Colour: Blue/Green with yellow circle
- Pattern: Pinfire
- Shape: Freeform
- Finish: Polished
- Brightness: B3 (of 5)
- Dimensions: 30 × 16 × 3 mm
- Weight: 6 g
- Fitting: Leather cord
- Source: Miner-direct
- 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.
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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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Opal Brightness Guide
Judging brightness