Boulder Opal

Authentic. Rare. Unforgettable.

Genuine boulder opal, colour and pattern set naturally within its ironstone host.
Black Opal
Black Opal
Dark Opal
Dark Opal
Crystal Opal
Crystal Opal
White Opal
White Opal
Rough Opal
Rough Opal
Under $500
Under $500
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Direct insight into each opal’s origin and character

Rough Rubbed and Finished opals, also Specimens and Fossils

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Rough Black Opal

Explore genuine Lightning Ridge rough opal from beginner friendly pieces to collector grade material with exceptional potential.

Rough Opal

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If you're looking for great quality black opal, at an awesome price and amazing customer service then Opal Hub is for you. I would recommend looking at all the beautiful stones that are for sale. They can definitely help you decide on what stone would be best for you if needed. Thank you Opal Hub Australia, I can't wait to get my parcel of gorgeous Opal!

Zach Nielsson

First parcel arrived when I got home today. The little red Opals might be the best I've got from The Ridge, and I have quiet a big collection.

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I recently joined because opal hub live auctions kick ass! And Anton is the man. Thanks to him I've got not only the most opal I've ever bought at one time on the way, but also the best parcels I've ever purchased.

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Frequently Asked Questions

Are your opals genuine Lightning Ridge Black Opals?

Yes. All of our opals are genuine and sourced from Lightning Ridge. Each stone is accurately described and photographed so you can purchase with confidence.

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Boulder Opal | Queensland | Opal Hub Australia

Discover boulder opal, a variety unlike any other precious opal, remaining naturally attached to its ironstone host rock rather than being cut free from it. At Opal Hub Australia, we source boulder opal from Queensland, offering a variety of opal defined as much by its formation as by its colour.

Boulder opal forms within cracks and cavities inside ironstone boulders, and colour presents here the same way it does in any fine opal, through diffraction across microscopic silica spheres, larger spheres diffracting red, the rarest colour and hardest to form without structural flaw, smaller spheres diffracting blue and violet at the opposite structural extreme. What sets boulder opal apart is the contrast, vivid colour set directly against dark, natural ironstone, an organic, irregular presentation that no other opal variety offers, since black and crystal opal are cut away from their host rock entirely, while boulder opal keeps it.

Shop Genuine Boulder Opal

Boulder Opal Rings
Boulder Opal Pendants
Boulder Opal Earrings
Loose Boulder Opal
Boulder Opal Specimens

Every piece is personally selected for genuine colour, pattern and quality.

Where Our Boulder Opal Comes From

Boulder opal is found throughout Queensland, distinct from the black, dark and crystal opal fields of Lightning Ridge. Its formation within ironstone gives it a genuinely different geological character to New South Wales opal.

Why Choose Boulder Opal

Naturally attached to its ironstone host, unlike any other opal variety
Colour driven by genuine structural rarity, red and blue at opposite extremes of sphere size
Organic, irregular shapes with striking natural contrast
A completely unique gemstone, no two ever alike
Impossible to replicate or manufacture synthetically

Acquire With Confidence

At Opal Hub Australia, we select every piece of boulder opal for its genuine colour, pattern and quality. Browse our boulder opal collection and discover a genuinely different side of Australian opal.