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 Necklace - Purple Blue Broad Flash Tribal Pendant (Double‑Sided)
Boulder Opal Necklace - Purple Blue Broad Flash Tribal Pendant (Double‑Sided)
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Volcanofall - Like looking straight down the funnel of an erupting volcano, that vivid purple circle glowing like the molten core while the surrounding blue broad‑flash rises around it like swirling heat and smoke. Colour surging upward through the stone as if the earth itself is mid‑eruption.
This striking boulder opal necklace features a large tribal‑style drilled stone with a vivid purple circle on the front, surrounded by blue broad‑flash colour play.
The opal is double‑sided, offering natural beauty from every angle, and was ethically sourced from a miner in Queensland, Australia.
Polished to a smooth finish and fitted to a leather cord, this teardrop‑shaped pendant has a brightness level of 4, giving it strong, lively colour movement in both natural and indoor light.
Its bold size and unique purple feature make it a true statement piece for opal lovers and collectors.
A one‑of‑a‑kind Australian opal necklace ready to become someone’s new favourite treasure.
- Opal Type: Boulder Opal
- Origin: Queensland, Australia
- Style: Large drilled tribal pendant
- Colour: Purple/Blue
- Pattern: Broad Flash
- Shape: Teardrop
- Finish: Polished
- Brightness: 4 (of 5)
- Dimensions: 29 × 25 × 5 mm
- Weight: 9 g
- Fitting: Leather cord
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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