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
Large Solid Boulder Opal Necklace – Off‑White Tribal Pattern (Adjustable Cord)
Large Solid Boulder Opal Necklace – Off‑White Tribal Pattern (Adjustable Cord)
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The Alienveil - A boulder opal that looks like a barren alien landscape, its off‑white tribal pattern stretching across the surface like wind‑carved plains and strange terrain glimpsed from orbit, quiet, desolate, and beautifully other‑worldly.
This large solid boulder opal necklace has a striking off‑white tribal pattern that flows across its polished oval surface, giving it a bold, earthy presence.
The stone is double‑sided, revealing more natural patterning and ironstone on the reverse, making it full of character from every angle.
With brightness 3, the broad flash is soft and subtle, creating a gentle shimmer rather than strong colour play - perfect for those who love opal’s organic, understated beauty.
Its generous size and smooth oval shape make it a standout statement piece, finished on an adjustable leather cord for easy everyday wear.
Sourced directly from the miner, this is a one‑of‑a‑kind Australian opal with a unique tribal aesthetic.
- Opal Type: Boulder Opal
- Format: Solid
- Colour: Off‑white with natural patterning
- Pattern: Broad Flash (subtle)
- Shape: Oval
- Finish: Polished
- Brightness: B3 (of 5)
- Stone Dimensions: 40 × 24 × 8 mm
- Weight: 17 g
- Back: Double‑sided
- Fitting: Adjustable leather cord (arrives untied)
- 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