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 Seam Opal Necklace – Pinfire & Circular Nut Pattern
Boulder Seam Opal Necklace – Pinfire & Circular Nut Pattern
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Earthcurrent - A vivid opal seam that twists through nut‑patterned ironstone, glowing with gentle colour like a current of light moving through layered earth.
This solid boulder seam opal pendant features a polished rectangular stone with green, blue and purple pinfire across the front, along with a distinctive circular nut pattern that gives it a natural, organic look.
Fully double‑sided, the back shows additional matrix and colour, making the pendant reversible.
The 29 × 12 × 4 mm stone has a smooth polished finish and brightness 3, offering gentle but visible flashes as it moves.
Hung on an adjustable leather cord, it’s an earthy, miner‑direct piece perfect for those who love raw, natural opal patterns.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: Purple, Green, Blue
- Pattern: Pinfire + circular nut pattern
- Shape: Rectangle
- Finish: Polished
- Brightness: B3 (of 5)
- Stone Dimensions: 29 × 12 × 4 mm
- Weight: 6 g
- Design: Double‑sided
- Fitting: Adjustable 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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Stories from the Studio
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Ethical Opal Sourcing
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Caring for Australian Opal
A simple guide -
Opal Brightness Guide
Judging brightness