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 Dangle Earrings Deep Blue & Green Flash (925 Silver 18k Gold Plated)
Boulder Opal Dangle Earrings Deep Blue & Green Flash (925 Silver 18k Gold Plated)
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The Riverlight Pair - Deep blue boulder opal earrings streaked with flowing lines that shimmer like running water, their bold green flashes rippling through the stones with every movement.
These polished boulder opal doublet dangle earrings shimmer with deep blue and green broad flash, catching the light beautifully as they move.
Each freeform opal is set in 925 silver with an 18k gold‑plated finish, adding warmth and luxury to the design.
With brightness 4, the colour play is vivid and dynamic - flashes of oceanic blue and emerald green ripple across the stones.
Elegant yet bold, these earrings are perfect for evening wear or gifting. A miner‑direct pair that combines artisan opal with fine jewellery craftsmanship.
- Opal Type: Boulder Opal
- Format: Doublet
- Colour: Deep Blue, Green
- Pattern: Broad Flash
- Shape: Freeform
- Finish: Polished
- Brightness: B4 (of 5)
- Stone Size: 11 × 4 mm
- Fitting: 925 Silver with 18k Gold Plating
- 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