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 Necklace – Purple, Green & Blue Pinfire
Solid Boulder Opal Necklace – Purple, Green & Blue Pinfire
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Intricaveil - A boulder opal with complex, intricate pinfire that shimmers in purple, green and blue, its double‑sided patterning creating a layered, veil‑like depth that shifts as you move it, almost like looking through overlapping fragments of colour and stone.
This solid boulder opal necklace shows off a striking mix of purple, green, and blue pinfire that shimmers across its polished rectangular surface.
The stone is double‑sided, revealing natural colour and ironstone matrix on both faces - a lovely detail that gives it depth and character when worn.
With brightness 4, the colours lift beautifully in the light, especially the purple tones that collectors love for their rarity and richness.
The freeform rectangular shape gives it a bold, modern feel, while the adjustable leather cord keeps it comfortable and easy to style for everyday wear.
A one‑of‑a‑kind piece sourced directly from the miner, full of natural Australian opal charm.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: Purple, Green, Blue
- Pattern: Pinfire
- Shape: Rectangle / Freeform
- Finish: Polished
- Brightness: B4 (of 5)
- Stone Dimensions: 28 × 21 × 6 mm
- Weight: 10 g
- Back: Double‑sided
- Fitting: Adjustable leather cord
- 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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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