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
Matrix Boulder Opal Necklace – Green Purple & Orange
Matrix Boulder Opal Necklace – Green Purple & Orange
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The Prismweave Mosaic - A vibrant matrix boulder opal alive with intricate swirls, circles and shifting colours, its bright green, purple and orange pinfire sparkling like a tiny woven galaxy captured inside stone.
This polished matrix‑conglomerate boulder opal necklace shows a vibrant mix of green, purple and orange pinfire across its freeform surface.
With brightness 4, the colours sparkle clearly as the stone moves, creating a lively, eye‑catching shimmer.
The natural matrix pattern gives it a textured, mosaic‑like look, while the double‑sided finish means it’s beautiful from every angle.
Smooth, colourful and full of character, it’s finished on an adjustable leather cord and sourced directly from the miner - a unique Australian opal with a warm, artisan feel.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: Green, Purple, Orange
- Pattern: Pinfire (matrix conglomerate)
- Shape: Freeform
- Finish: Polished
- Brightness: B4 (of 5)
- Stone Dimensions: 33 × 19 × 4 mm
- Weight: 7 g
- Back: Double‑sided
- Fitting: Leather cord (adjustable)
- 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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Opal Brightness Guide
Judging brightness