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 – White Seams & Green Pinfire
Boulder Opal Necklace – White Seams & Green Pinfire
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Earthflow - A boulder opal that looks like dark earth traced with winding blue streams, its gentle green pinfire glinting like light catching moving water.
This large double‑sided solid boulder opal pendant features striking white seams running through the stone, accented by gentle green pinfire across its polished rectangular surface.
The 32 × 22 × 3 mm opal has a bold, geometric shape with natural matrix textures that give it an earthy, grounded feel.
With brightness 3, the colour play is subtle but clearly visible, making it an easy everyday piece with artisan charm.
The back shows natural solid opal matrix with visible seams, making the pendant fully reversible.
Finished on an adjustable leather cord and sourced directly from the miner, this is a beautiful natural opal for anyone who loves organic patterns and larger statement stones.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: White, Green
- Pattern: Pinfire with matrix seams
- Shape: Rectangle
- Finish: Polished
- Brightness: B3 (of 5)
- Stone Dimensions: 32 × 22 × 3 mm
- Weight: 10 g
- Fitting: Adjustable leather cord
- Design: Double‑sided (matrix and seam back)
- 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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Ethical Opal Sourcing
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A simple guide -
Opal Brightness Guide
Judging brightness