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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Harlequin Boulder Opal 14.7 ct

33,102
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3.95ct Certified Black Opal Chinese Writing Pattern

16,122
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Black Opal 9.82ct Certified Neon Rainbow Fire Butterfly Wing

Ursprünglicher Preis war: €19,415Aktueller Preis ist: €13,464.
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Black Opal Neon Blue Teal Fire 11.98ct

11,903
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Dark Opal 8.22ct Metallic Red Pink Rainbow Fire

10,462
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10.21ct Boulder Opal Electric Multicolor Fire

7,118
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Green Black Opal 1.39 ct set in 18K White Gold Ring

6,003
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2.65ct Solid Black Opal Pear Green Blue Fire

5,600
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Black Crystal Opal Matching Pair 9.22ct Sparkling Multicolor Fire

5,403
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4.34ct Natural Black Opal Heart Red Fire

5,403
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1.84ct Black Opal Rolling Multicolor Fire

4,262
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Lightning Ridge Black Opal 4.32ct

3,859
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2.12ct Natural Black Crystal Opal Neon Fuchsia Rainbow Fire

3,855
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1.1ct Black Opal Bright Red and Multicolor Fire

3,773
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36.28ct Top Gem Crystal Boulder Opal Heart

Ursprünglicher Preis war: €7,778Aktueller Preis ist: €3,773.
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Purple Winton Crystal Boulder Opal for Pendant 31.95 ct

Ursprünglicher Preis war: €7,718Aktueller Preis ist: €3,773.
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Black Opal 1.41ct Red Multicolor Fire

3,628
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1.46ct Natural Black Opal Teardrop Turquoise Blue Green

3,413
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Lightning Ridge Oval Crystal Opal 4.87ct

3,087
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5.91ct Solid Black Opal Vivid Neon Blue Green Fire

Ursprünglicher Preis war: €4,352Aktueller Preis ist: €2,993.

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.