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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: 628393
Weight: 10.65ct
Size: 20.2 x 13.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 63.90
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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: 628387
Weight: 11.36ct
Size: 17.5 x 11.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 68.16
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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: 628051
Weight: 12.72ct
Size: 24.2 x 9.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 76.32
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ID: 626576
Weight: 8.30ct
Size: 19.3 x 11 mm
Clarity: Opaque
Content: 1 pc
Price: $ 76.69
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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: 626298
Weight: 21.39ct
Size: 16 x 16 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 197.64
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ID: 626295
Weight: 13.78ct
Size: 19.2 x 13.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 127.33
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ID: 626292
Weight: 4.31ct
Size: 15.8 x 10 mm
Clarity: Translucent
Content: 1 pc
Price: $ 36.20
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ID: 626296
Weight: 8.69ct
Size: 20 x 12.3 mm
Clarity: Translucent
Content: 1 pc
Price: $ 80.29
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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: 575168
Weight: 11.89ct
Size: 29.6 x 9.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 42.80
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ID: 524128
Weight: 19.30ct
Size: 25.4 x 21.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 127.38
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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: 523153
Weight: 11.18ct
Size: 23.3 x 16.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 73.79
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ID: 522953
Weight: 13.97ct
Size: 20.4 x 12.9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 92.21
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ID: 469563
Weight: 39.95ct
Size: 17.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 239.70
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ID: 410119
Weight: 34.16ct
Size: 23.4 x 19.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 316.10
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ID: 365224
Weight: 13.21ct
Size: 14 x 14 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 122.06
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ID: 575232
Weight: 35.80ct
Size: 36.6 x 19.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 141.77
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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: 302900
Weight: 23.34ct
Size: 20.8 x 14 mm
Clarity: Opaque
Content: 1 pc
Price: $ 215.66
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ID: 248000
Weight: 13.14ct
Size: 19.5 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 121.42
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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: 365252
Weight: 10.04ct
Size: 15.2 x 12.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 92.77
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ID: 321921
Weight: 21.32ct
Size: 27.3 x 13.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 196.99
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ID: 300453
Weight: 28.58ct
Size: 23.1 x 18.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 240.07
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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: 321842
Weight: 22.67ct
Size: 21.8 x 16.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 209.47
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ID: 321922
Weight: 28.03ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 259.00
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ID: 321926
Weight: 21.46ct
Size: 28.9 x 18.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 198.29
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ID: 322037
Weight: 42.73ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 394.82
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ID: 321839
Weight: 26.23ct
Size: 23.2 x 17 mm
Clarity: Opaque
Content: 1 pc
Price: $ 242.36
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ID: 300454
Weight: 20.92ct
Size: 25.5 x 14.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 193.30
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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: 523723
Weight: 36.66ct
Size: 39.1 x 16.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 241.96
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ID: 523722
Weight: 33.71ct
Size: 32.6 x 22.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 222.49
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ID: 523720
Weight: 17.29ct
Size: 27 x 17.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 114.12
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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: 523676
Weight: 19.94ct
Size: 36.4 x 16.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 131.60
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ID: 523673
Weight: 27.17ct
Size: 33.3 x 11.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 179.33
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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: 522982
Weight: 17.03ct
Size: 26.9 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 112.40
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ID: 522410
Weight: 20.80ct
Size: 32.3 x 16.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 137.28
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ID: 522638
Weight: 9.66ct
Size: 22.4 x 13.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 63.76
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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: 522179
Weight: 18.73ct
Size: 23.5 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 123.62
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ID: 522174
Weight: 21.82ct
Size: 27 x 20 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 144.01
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ID: 521754
Weight: 30.94ct
Size: 25.4 x 20.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 204.20
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ID: 522130
Weight: 13.46ct
Size: 14.7 x 12.1 mm
Clarity: Opaque
Content: 1 pc
Price: $ 88.84
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ID: 522128
Weight: 14.29ct
Size: 21.6 x 14.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 94.32
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ID: 521759
Weight: 26.43ct
Size: 28.5 x 17.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 174.44
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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: 321927
Weight: 31.20ct
Size: 29.5 x 20.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 288.29
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ID: 321836
Weight: 13.35ct
Size: 21.4 x 15 mm
Clarity: Opaque
Content: 1 pc
Price: $ 123.36
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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: 365230
Weight: 17.55ct
Size: 19.4 x 13.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 162.17
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ID: 365249
Weight: 10.40ct
Size: 19.5 x 12.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 96.10
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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!

Overall Rating -> 9 star ratings

It was a good experience looking for and finding a nice amethyst stone

Posted By N/a in May, 2025
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Overall Rating -> 10 star ratings

Found a beautiful opal at a great price. I was not disappointed when it arrived. Even better in person.

Posted By Fried Rice in August, 2025
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Overall Rating -> 10 star ratings

Nice website I just don't know much about the quality until I receive the stone.

Posted By Becky in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I am never let down by GemSelect. I love that you get the exact stone you want. Shipping is always in a few days. I have spread the word about GemSelect on social media jewelry creating groups that I attend. This sapphire is going to make one gorgeous ring

Posted By Desertchick in April, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 2025
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Overall Rating -> 10 star ratings

Very large selection from affordable to high end I will be coming back to shop again!

Posted By GreenGator in August, 2025
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Overall Rating -> 9 star ratings

I did not realize these stones were of jewelry quality. They are really beautiful, just not what I was expecting which was more of a natural stone.

Posted By Jewelry Quality Stones in July, 2025
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Overall Rating -> 10 star ratings

Was a good experience.

Posted By Tim in July, 2025
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Overall Rating -> 10 star ratings

Great for buying gemstones, came with authenticity certs. Will buy again someday!

Posted By Uggadugga in May, 2025
Source: Bizrate
Enlarged Gemstone Image