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 Doublet Earrings – Red & Blue Flash (18k Gold‑Plated 925 Silver)
Boulder Opal Doublet Earrings – Red & Blue Flash (18k Gold‑Plated 925 Silver)
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The Nebulight Ovals - A pair of boulder opal doublets that glow like tiny cosmic nebulae, their red‑and‑blue broad flash swirling across each oval face like star clouds drifting through deep space.
These oval boulder opal doublet earrings glow with a striking mix of red and blue broad flash, shifting beautifully as the light moves across their polished surface.
The red flash adds warmth and rarity, while the blue brings depth and contrast - a bold, eye‑catching combination.
Set in stamped 925 silver with a 18k gold‑plated finish, they have a refined, elegant look that elevates the opal’s natural fire.
With brightness 4, the colour play is vivid and lively, making these earrings perfect for anyone who loves opal with personality and presence. Each pair is miner‑direct and completely unique.
- Opal Type: Boulder Opal
- Format: Doublet
- Colour: Red, Blue
- Pattern: Broad Flash
- Shape: Oval
- Finish: Polished
- Brightness: B4 (of 5)
- Jewellery Size: 5 × 4 mm
- Fitting: 925 Silver, 18k Gold‑Plated
- 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