Natural Australian Rainbow Opal

Natural Australian rainbow opals display the entire spectrum of the rainbow in a single, mesmerizing play of color. Sourced from legendary fields such as Coober Pedy, these transparent and translucent crystal gems allow light to pass through their silica structure, illuminating flowing spectral patterns. Every stone is guaranteed 100 percent natural and solid.

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2.72ct Dark Opal MultiColor Fire

AU$1,002
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10x5mm Crystal Opal Calibrated 7ct

AU$974
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Opal Doublet 11.9ct Red Multicolor Fire

AU$891
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1.2 ct Dark Opal Rainbow Lightning Ridge

AU$891
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3.6ct Natural Crystal Boulder Opal Round

AU$877
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1.24ct Dark Opal Rainbow Fire

AU$863
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4.8ct Natural White Opal Cooberpedy

AU$787
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Opal Doublet 12.4ct Red Multicolor Fire

AU$731
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2.76ct Crystal Opal Parcel 4pcs Calibrated 10x7mm 8x5mm

AU$599
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12.47ct Natural Australian Crystal Boulder Opal

AU$585
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Australian Boulder Opal Red Fire 1.22ct

AU$557
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1.8ct Crystal Opal Parcel 6pcs Calibrated 8x5mm

AU$557
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1.47ct Natural Dark Opal Multicolor Fire

AU$522
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3.42ct Crystal Opal Parcel 6pcs Calibrated 10x7mm

AU$501
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2Pcs Crystal Opal Pair 1.16ctw

AU$501
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Opal Doublet Parcel Calibrated 8x5mm

AU$473
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Opal Doublet Parcel Calibrated 8x5mm

AU$473
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Opal Doublet Pair 1.96ct

AU$473
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1.06 ct Dark Opal Heart

AU$445
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1.09ct Crystal Opal Pair 2pcs Calibrated 10x7mm 5x5mm

AU$439

Flowing Spectral Displays and Luminous Beauty

Rainbow opals are unique because they showcase every single color of the visible spectrum within a single gem – from deep violet and blue to green, warm gold, and rare cherry red. This beautiful effect occurs because the sub microscopic silica spheres vary in size across the stone’s lattice, creating multiple distinct zones of diffraction.

We highly suggest readers check our detailed blog rainbow opals complete guide for mineral logical and cutting insights. These flowing spectral colors look highly spectacular when set in fine jewelry, especially custom pendants where light can pass through the transparent crystal body, making the rainbows practically sparkle from within. At Opal Galaxy, we source our rainbow opals directly from trusted miners on South Australian fields, ensuring authentic provenance and natural, untreated beauty.

Frequently Asked Questions

What defines a rainbow opal?

It is a precious opal displaying a continuous, flowing spectrum of colors from red to violet as it moves.

Where are rainbow opals mined?

The finest rainbow crystal opals are mined in the sedimentary basins of Coober Pedy, South Australia.

Are these rainbow colors natural?

Yes, every rainbow opal in our collection is 100 percent natural, solid, and untreated.