Natural Precious Opal Stones

Natural precious opal stones display a shifting rainbow of spectral colors that dance across their polished cabochon surfaces with every movement. Sourced directly from Australia’s famous outback mining fields, our collection features solid black, boulder, crystal, and light white opals. Every polished loose stone is guaranteed natural and untreated.

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11.3 ct Half Moon Crystal Boulder Opal – Blue Green

AU$4,555
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6.9 ct Natural Crystal Opal – Oval Vivid Multicolor

AU$4,555
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1.8ct Natural Black Opal -Rainbow Rolling Ribbon Pattern

AU$3,815
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3.72ct Natural Dark Opal Heart – Multicolor Fire

AU$3,701
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Black Opal 1.75ct Bright Multicolor Fire

AU$3,487
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1.81ct Natural Black Opal Chinese Writing Pattern

AU$3,402
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5.67ct Natural Dark Opal Multicolor

AU$3,302
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Black Opal 5.23ct Large Multicolor Fire

AU$3,274
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8.67ct Natural Dark Opal Oval Flagstone Pattern

AU$3,131
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Black Opal 3.75ct Green Multicolor Fire

AU$3,032
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168.3ct Natural Boulder Opal Specimen

AU$2,847
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0.5ct Black Opal – Neon Red Rainbow Fire

Original price was: AU$4,057.Current price is: AU$2,847.
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13.1ct Natural Crystal Boulder Opal Round

AU$2,847
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2.14ct Natural Black Opal Heart with Rolling Multicolor Fire

AU$2,825
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6.4ct Natural Crystal Boulder Opal

AU$2,825
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Boulder Opal 4.6ct Vivid Multicolor Fire

AU$2,690
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Opal Doublet 28.05ct Red Multicolor Fire

AU$2,633
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Opal Doublet 16.1ct Red Multicolor Fire

AU$2,562
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Black Opal Teardrop – 2.84 ct Green Blue Fire Gemstone

AU$2,384
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Dark Opal 0.93ct Neon Multicolor Fire

AU$2,277

Choosing and Valuing Natural Precious Opal Stones

To evaluate and choose a loose precious opal, buyers must understand the primary value factors. The background darkness, or body tone, is the foundation, with darker body tones (such as black and dark opals) making colors appear more intense and command higher prices. The play of color brightness is equally critical; a brilliant stone displays intense fire even in dim, indoor lighting conditions.

The spectral color range also dictates value, with red being the rarest and most expensive hue, followed by orange, green, and blue. To find comprehensive tips, please consult our how to buy Australian opals technical guide to learn about patterns and body tone scales. Whether sourcing for custom jewelry or building a long term collector portfolio, our ethically sourced, hand selected loose stones offer exceptional quality and value.

Frequently Asked Questions

What defines a precious opal stone?

Precious opal is defined by its ability to diffract light into a vibrant play of color, which common opal lacks.

Where are your precious stones mined?

Our stones are sourced directly from premier Australian fields including Lightning Ridge, Winton, and Coober Pedy.

What shapes are these stones cut into?

We offer classic oval cabochons alongside organic freeform shapes that preserve natural carat weight.

Are these loose stones calibrated?

We offer both standardized calibrated stones for standard mounts and unique freeform pieces.

Can I request custom video clips of these stones?

No, our professional 4K videos already show each stone under optimized neutral light conditions.