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
Drilled Boulder Opal Necklace - Freeform Blue‑Green
Drilled Boulder Opal Necklace - Freeform Blue‑Green
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Amberlake - A boulder opal that looks like a warm amber lake surrounded by cool blue‑green shallows, the yellow ironstone patches glowing like sunlight caught in still water. The freeform shape and soft pinfire give it that quiet, earthy, “nature‑carved” feel - like a hidden pool discovered deep in the landscape.
This natural Australian miner‑sourced Boulder Opal necklace features a striking mix of blue‑green colour play with warm yellow ironstone patches, giving it a bold, earthy character.
Cut into a freeform shape and polished to a smooth finish, this pendant is perfect for lovers of organic, raw‑inspired gemstone jewellery.
Sourced directly from the miner and drilled for a simple leather cord fitting, this piece has a rustic, grounded feel - ideal for everyday wear or as a unique statement accessory.
- Opal Type: Natural Boulder Opal
- Format: Doublet
- Dimensions: 23 x 17 x 3 mm
- Weight: 3 g
- Colour Play: Blue & green with yellow matrix patches
- Pattern: Pinfire
- Brightness: B1 (of 5)
- Shape: Freeform
- Finish: Polished
- Fitting: Leather cord
- Style: Rustic, natural, bohemian
- 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