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 Stacker Ring - Blue & Red Flash (925 Silver)
Boulder Opal Stacker Ring - Blue & Red Flash (925 Silver)
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The Kaleidoflare Gem - A tiny round boulder opal that shifts like a miniature kaleidoscope, its vivid blue, red and green flashes spinning through the stone with bright, playful movement.
This dainty boulder opal doublet ring features flashes of vivid blue and red across its polished 4 × 4 mm round stone.
The opal’s broad flash pattern gives it lively movement, with hints of green flickering through as the light shifts.
Set in a minimalist 925 silver bezel, it’s designed as a stacker - slim, elegant, and perfect for layering with other rings.
With brightness 4, the colour play is strong and eye‑catching despite its petite size. A miner‑direct piece that adds a pop of colour to any combination.
Ring size:
- O UK
- 7 US
- 14 EU
- 54 Asia
Features:
- Opal Type: Boulder Opal
- Format: Doublet
- Colour: Blue, Red, Orange, Green
- Pattern: Broad Flash
- Shape: Round
- Finish: Polished
- Brightness: B4 (of 5)
- Stone Size: 4 × 4 mm
- Fitting: Stamped 925 Silver
- 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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More from the Studio
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Stories from the Studio
Read our latest posts -
Ethical Opal Sourcing
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Caring for Australian Opal
A simple guide -
Opal Brightness Guide
Judging brightness