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

Boulder Opal Weight
Boulder Opal Size
Boulder Opal Clarity
Boulder Opal Price

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ID: 636160
Weight: 6.20ct
Size: 22.9 x 7.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 52.08
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ID: 744780
Weight: 3.16ct
Size: 9.7 x 7.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 15.80
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ID: 678677
Weight: 11.51ct
Size: 26.8 x 14.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 69.06
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ID: 744785
Weight: 8.77ct
Size: 22.1 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 43.85
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ID: 744116
Weight: 8.90ct
Size: 21.5 x 13.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 44.50
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ID: 627633
Weight: 13.49ct
Size: 19.8 x 13.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 124.64
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ID: 302922
Weight: 32.39ct
Size: 33.7 x 15 mm
Clarity: Opaque
Content: 1 pc
Price: $ 299.28
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ID: 635340
Weight: 7.95ct
Size: 18.3 x 9.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 66.78
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ID: 679145
Weight: 17.63ct
Size: 23.8 x 14.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 105.78
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ID: 744805
Weight: 4.62ct
Size: 14 x 9 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 23.10
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ID: 678768
Weight: 5.41ct
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 32.46
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ID: 627961
Weight: 12.38ct
Size: 25 x 18 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 74.28
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ID: 744784
Weight: 8.33ct
Size: 17.9 x 11.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 41.65
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ID: 679243
Weight: 11.23ct
Size: 18.3 x 12.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 67.38
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ID: 321930
Weight: 36.09ct
Size: 29.8 x 18.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 333.47
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ID: 678670
Weight: 12.53ct
Size: 17.8 x 13.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 75.18
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ID: 679222
Weight: 5.77ct
Size: 18.1 x 11.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 34.62
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ID: 678672
Weight: 9.66ct
Size: 26.4 x 12.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 57.96
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ID: 628388
Weight: 18.63ct
Size: 19.6 x 17.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 111.78
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ID: 744115
Weight: 9.91ct
Size: 16.1 x 13.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 49.55
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ID: 628048
Weight: 15.41ct
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 92.46
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ID: 679140
Weight: 7.32ct
Size: 14.4 x 10.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 43.92
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ID: 636042
Weight: 7.10ct
Size: 21.2 x 10.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 59.64
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ID: 744787
Weight: 5.27ct
Size: 17.4 x 10.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 26.35
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ID: 744518
Weight: 4.49ct
Size: 12.3 x 9.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 22.45
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ID: 630676
Weight: 7.30ct
Size: 15 x 9.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 61.32
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ID: 627970
Weight: 11.19ct
Size: 18.2 x 14.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 67.14
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ID: 678678
Weight: 8.27ct
Size: 27.2 x 8.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 49.62
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ID: 718558
Weight: 8.60ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 51.60
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ID: 678668
Weight: 10.30ct
Size: 22.6 x 15.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 61.80
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ID: 718554
Weight: 16.59ct
Size: 29.3 x 14.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 99.54
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ID: 744111
Weight: 3.11ct
Size: 9 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 15.55
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ID: 420744
Weight: 12.87ct
Size: 21 x 10 mm
Clarity: Opaque
Content: 1 pc
Price: $ 101.93
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ID: 628051
Weight: 12.72ct
Size: 24.2 x 9.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 76.32
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ID: 636152
Weight: 8.58ct
Size: 15 x 10.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 72.07
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ID: 575199
Weight: 11.61ct
Size: 18.8 x 12.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 41.80
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ID: 679139
Weight: 6.17ct
Size: 14 x 14 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 37.02
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ID: 678882
Weight: 7.13ct
Size: 13 x 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 102.78
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ID: 678675
Weight: 13.28ct
Size: 26.7 x 13.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 79.68
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ID: 718508
Weight: 10.02ct
Size: 20.8 x 14.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 60.12
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ID: 718640
Weight: 5.11ct
Size: 12.3 x 10.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 30.66
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ID: 744797
Weight: 8.55ct
Size: 16 x 13.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 42.75
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ID: 718610
Weight: 16.76ct
Size: 29.1 x 12.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 100.56
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ID: 321927
Weight: 31.20ct
Size: 29.5 x 20.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 288.29
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ID: 718638
Weight: 10.92ct
Size: 22.6 x 12.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 65.52
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ID: 744113
Weight: 11.09ct
Size: 20.3 x 16.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 55.45
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ID: 678673
Weight: 11.36ct
Size: 26.3 x 13.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 68.16
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ID: 718553
Weight: 22.81ct
Size: 29.2 x 16.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 136.86
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ID: 744112
Weight: 17.39ct
Size: 23.5 x 16.7 mm
Clarity: Translucent
Content: 1 pc
Price: $ 86.95
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ID: 744783
Weight: 6.73ct
Size: 18.2 x 11.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 33.65
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ID: 718515
Weight: 40.27ct
Size: 41.4 x 24.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 241.62
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ID: 744812
Weight: 3.70ct
Size: 13.1 x 12.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 18.50
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ID: 365230
Weight: 17.55ct
Size: 19.4 x 13.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 162.17
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ID: 627636
Weight: 14.28ct
Size: 23.2 x 11.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 131.95
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ID: 744811
Weight: 5.44ct
Size: 15 x 9.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 27.20
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ID: 522179
Weight: 18.73ct
Size: 23.5 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 123.62
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ID: 744788
Weight: 8.61ct
Size: 17.9 x 11.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 43.05
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ID: 679216
Weight: 25.69ct
Size: 25.7 x 15.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 154.14
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ID: 744809
Weight: 3.94ct
Size: 13.7 x 10.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 19.70
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ID: 678880
Weight: 6.97ct
Size: 19.2 x 10.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 41.82
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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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Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

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The stones are very nice.

Posted By Mvk in August, 2025
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