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Shop Loose Boulder Opal: Cabochons, Natural Boulder Opal for Jewelry

Boulder Opal Weight
Boulder Opal Size
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Boulder Opal Price

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ID: 522132
Weight: 18.28ct
Size: 36.2 x 14.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 120.65
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ID: 744808
Weight: 2.86ct
Size: 13.6 x 7.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 14.30
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ID: 744802
Weight: 17.18ct
Size: 21.2 x 16.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 85.90
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ID: 575198
Weight: 19.83ct
Size: 22.8 x 21.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 78.53
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ID: 718509
Weight: 6.08ct
Size: 16.1 x 9.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 36.48
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ID: 718645
Weight: 17.20ct
Size: 21.7 x 13.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 103.20
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ID: 679241
Weight: 9.45ct
Size: 23.9 x 9.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 56.70
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ID: 302919
Weight: 7.81ct
Size: 16.4 x 10.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 72.17
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ID: 744801
Weight: 7.72ct
Size: 22.4 x 13.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 38.60
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ID: 679218
Weight: 13.64ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 81.84
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ID: 321845
Weight: 22.54ct
Size: 24.8 x 20 mm
Clarity: Opaque
Content: 1 pc
Price: $ 208.27
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ID: 744792
Weight: 13.99ct
Size: 20.3 x 17.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 69.95
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ID: 626577
Weight: 10.43ct
Size: 20.1 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 96.37
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ID: 744782
Weight: 5.40ct
Size: 16.4 x 10.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 27.00
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ID: 522176
Weight: 20.13ct
Size: 28.4 x 17.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 132.86
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ID: 679217
Weight: 18.42ct
Size: 22.4 x 14.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 110.52
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ID: 629949
Weight: 7.48ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 62.83
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ID: 523156
Weight: 16.01ct
Size: 30.6 x 12.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 105.67
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ID: 636158
Weight: 16.52ct
Size: 19 x 14.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 138.77
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ID: 523723
Weight: 36.66ct
Size: 39.1 x 16.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 241.96
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ID: 523733
Weight: 13.23ct
Size: 22.8 x 14 mm
Clarity: Opaque
Content: 1 pc
Price: $ 87.32
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ID: 718607
Weight: 64.32ct
Size: 42.5 x 26.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 385.92
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ID: 744807
Weight: 3.94ct
Size: 12.1 x 8.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.70
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ID: 718606
Weight: 42.56ct
Size: 36.1 x 31 mm
Clarity: Opaque
Content: 1 pc
Price: $ 255.36
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ID: 679224
Weight: 8.10ct
Size: 21.3 x 12.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 48.60
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ID: 744786
Weight: 2.99ct
Size: 14.7 x 6.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 14.95
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ID: 630669
Weight: 12.50ct
Size: 22.8 x 11.5 mm
Clarity: Translucent
Content: 1 pc
Price: $ 105.00
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ID: 678877
Weight: 9.98ct
Size: 21.9 x 14 mm
Clarity: Opaque
Content: 1 pc
Price: $ 59.88
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ID: 627852
Weight: 8.68ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 52.08
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ID: 523150
Weight: 13.03ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 86.00
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ID: 718513
Weight: 17.99ct
Size: 9.7 x 17.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 107.94
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ID: 744794
Weight: 9.37ct
Size: 24.7 x 11.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 46.85
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ID: 627858
Weight: 12.73ct
Size: 16 x 16 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 76.38
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ID: 628049
Weight: 7.58ct
Size: 18 x 9.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 45.48
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ID: 627856
Weight: 9.35ct
Size: 17.6 x 14.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 56.10
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ID: 678674
Weight: 16.25ct
Size: 29.7 x 15 mm
Clarity: Opaque
Content: 1 pc
Price: $ 97.50
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ID: 744118
Weight: 16.35ct
Size: 23.8 x 15.4 mm
Clarity: Translucent
Content: 1 pc
Price: $ 81.75
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ID: 627971
Weight: 9.50ct
Size: 18.2 x 14 mm
Clarity: Opaque
Content: 1 pc
Price: $ 57.00
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ID: 628054
Weight: 11.28ct
Size: 23.7 x 8.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 67.68
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ID: 718507
Weight: 50.24ct
Size: 32.3 x 24.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 301.44
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ID: 718514
Weight: 12.00ct
Size: 26 x 16.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 72.00
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ID: 744804
Weight: 2.53ct
Size: 11.8 x 8.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 12.65
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ID: 678879
Weight: 42.66ct
Size: 23.8 x 21.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 255.96
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ID: 629219
Weight: 11.65ct
Size: 17 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 97.86
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ID: 628045
Weight: 9.86ct
Size: 20.4 x 11.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 59.16
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ID: 321835
Weight: 8.60ct
Size: 18.9 x 12.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 79.46
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ID: 744117
Weight: 10.20ct
Size: 20.9 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 51.00
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ID: 523719
Weight: 10.79ct
Size: 23.3 x 13.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 64.74
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ID: 679239
Weight: 12.62ct
Size: 14 x 14 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 75.72
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ID: 718562
Weight: 7.75ct
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 46.50
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ID: 628391
Weight: 16.83ct
Size: 23.2 x 16 mm
Clarity: Opaque
Content: 1 pc
Price: $ 100.98
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ID: 679247
Weight: 13.03ct
Size: 22.4 x 13.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 78.18
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ID: 678875
Weight: 6.10ct
Size: 17 x 11.5 mm
Clarity: Transparent
Content: 1 pc
Price: $ 36.60
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ID: 629217
Weight: 8.32ct
Size: 18.8 x 10.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 69.89
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ID: 718555
Weight: 63.70ct
Size: 29.5 x 29.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 382.20
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ID: 636153
Weight: 16.30ct
Size: 24.9 x 9.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 136.92
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ID: 575168
Weight: 11.89ct
Size: 29.6 x 9.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 42.80
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ID: 744119
Weight: 5.70ct
Size: 15 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 28.50
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ID: 628031
Weight: 14.37ct
Size: 16.4 x 13.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 120.71
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ID: 627632
Weight: 8.06ct
Size: 16.8 x 11.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 74.47
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FAQs

What is boulder opal, and where does it come from?

Boulder opal is a unique type of opal that forms naturally within ironstone rock, giving it a beautiful mix of colors and textures. The primary origin of boulder opal is Australia, where it is highly valued for its vibrant colors and durability.

Why choose loose boulder opal for jewelry?

Loose boulder opal offers flexibility for custom designs, making it perfect for creating unique boulder opal jewelry. Available in forms like raw boulder opal, polished boulder opal, and boulder opal cabochon, each piece highlights the natural beauty and rich colors that boulder opal gemstones are known for.

What colors are found in boulder opal gemstones?

Boulder opal colors are incredibly diverse, ranging from blues and greens to reds and purples. Each boulder opal crystal has its unique color pattern, influenced by the natural formation within the rock, making every gemstone one-of-a-kind.

Is Australian boulder opal different from other opals?

Yes, Australian boulder opal is distinct for its unique origin and vibrant color play. Unlike other types of opal, boulder opal forms within a matrix of ironstone, adding durability and a distinct look that is highly prized in the gemstone world.

What is the meaning and value of boulder opal?

Boulder opal meaning is often associated with grounding, creativity, and inspiration. Many believe it has healing properties that promote emotional stability. The value of boulder opal depends on factors like color intensity, pattern, and the quality of the opal within the ironstone matrix.

How should I care for my boulder opal jewelry?

Boulder opal jewelry is relatively durable but should still be handled with care. Avoid exposing your loose boulder opal or boulder opal cabochons to harsh chemicals or extreme temperatures to preserve their natural colors and shine.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

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No problems. I had a minor address issue in the past and someone got back to me very quickly and we resolved the issue satisfactorily. I appreciated the quick, concerned response. So important when buyer/seller are so far apart in distance. Thank you Gem Select. Keep up the good work!

Posted By Orphanboy in December, 2025
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Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
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A pleasant experience and many choices to choose from

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My whole experience is great.

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Very food

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I like the way your website shows us what stone were buying as well the easy way to navigate the site. also knowing the stones are real...

Posted By RED in January, 2025
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Always find more niche sizes/shapes as my unconventional designs require from this website. Recommending to fellow designers in the creative atmosphere on the usual, specially due to the quality and certification of gems.

Posted By Sina in April, 2025
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Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
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The stones are very nice.

Posted By Mvk in August, 2025
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