Shop Loose Boulder Opal: Cabochons, Natural Boulder Opal for Jewelry
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Discover our stunning collection of loose boulder opal gemstones, sourced from the finest Australian boulder opal origins. Known for their vibrant boulder opal colors and unique patterns, these gems make an exceptional choice for custom boulder opal jewelry. Choose from raw boulder opal, polished stones, or beautifully cut boulder opal cabochons to suit your design needs. Whether you're drawn to the natural beauty or the deep meaning and value of these gems, our selection offers a diverse range of options. |
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Bi-color
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Black
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Blue
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Brown
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Golden
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Gray
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Green
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Multicolor Boulder Opal
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Orange
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Pink
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Purple
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Red
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Turquoise
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Violet
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White
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Yellow
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Single |
Pairs |
Lots |
Faceted |
Cabochons |
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| ID: | 634610 |
| Weight: | 22.12ct |
| Size: | 27.5 x 12.8 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 185.81 |
| Item in Stock | |
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| ID: | 410119 |
| Weight: | 34.16ct |
| Size: | 23.4 x 19.6 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 316.10 |
| Item in Stock | |
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| ID: | 521759 |
| Weight: | 26.43ct |
| Size: | 28.5 x 17.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 174.44 |
| Item in Stock | |
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| ID: | 300453 |
| Weight: | 28.58ct |
| Size: | 23.1 x 18.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 240.07 |
| Item in Stock | |
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| ID: | 635341 |
| Weight: | 25.30ct |
| Size: | 29.7 x 13.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 212.52 |
| Item in Stock | |
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| ID: | 522985 |
| Weight: | 41.37ct |
| Size: | 30 x 22 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 273.05 |
| Item in Stock | |
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| ID: | 634607 |
| Weight: | 12.07ct |
| Size: | 27.4 x 9.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 101.39 |
| Item in Stock | |
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| ID: | 627837 |
| Weight: | 28.09ct |
| Size: | 27 x 20 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 259.55 |
| Item in Stock | |
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| ID: | 322037 |
| Weight: | 42.73ct |
| Size: | 27 x 20 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 394.82 |
| Item in Stock | |
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| ID: | 628031 |
| Weight: | 14.37ct |
| Size: | 16.4 x 13.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 120.71 |
| Item in Stock | |
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| ID: | 636049 |
| Weight: | 11.57ct |
| Size: | 17.3 x 12.3 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 97.19 |
| Item in Stock | |
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| ID: | 630669 |
| Weight: | 12.50ct |
| Size: | 22.8 x 11.5 mm |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 105.00 |
| Item in Stock | |
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| ID: | 321845 |
| Weight: | 22.54ct |
| Size: | 24.8 x 20 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 208.27 |
| Item in Stock | |
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| ID: | 420744 |
| Weight: | 12.87ct |
| Size: | 21 x 10 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 101.93 |
| Item in Stock | |
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| ID: | 635340 |
| Weight: | 7.95ct |
| Size: | 18.3 x 9.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 66.78 |
| Item in Stock | |
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| ID: | 718505 |
| Weight: | 40.81ct |
| Size: | 34.3 x 24.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 244.86 |
| Item in Stock | |
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| ID: | 627632 |
| Weight: | 8.06ct |
| Size: | 16.8 x 11.8 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 74.47 |
| Item in Stock | |
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| ID: | 302922 |
| Weight: | 32.39ct |
| Size: | 33.7 x 15 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 299.28 |
| Item in Stock | |
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| ID: | 627633 |
| Weight: | 13.49ct |
| Size: | 19.8 x 13.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 124.64 |
| Item in Stock | |
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| ID: | 321842 |
| Weight: | 22.67ct |
| Size: | 21.8 x 16.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 209.47 |
| Item in Stock | |
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| ID: | 628048 |
| Weight: | 15.41ct |
| Size: | 20 x 15 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 92.46 |
| Item in Stock | |
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| ID: | 718507 |
| Weight: | 50.24ct |
| Size: | 32.3 x 24.3 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 301.44 |
| Item in Stock | |
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| ID: | 718509 |
| Weight: | 6.08ct |
| Size: | 16.1 x 9.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 36.48 |
| Item in Stock | |
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| ID: | 678772 |
| Weight: | 12.95ct |
| Size: | 23.1 x 12.3 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 77.70 |
| Item in Stock | |
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| ID: | 679146 |
| Weight: | 15.66ct |
| Size: | 18.4 x 14.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 93.96 |
| Item in Stock | |
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| ID: | 635335 |
| Weight: | 14.55ct |
| Size: | 26.3 x 11.2 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 122.22 |
| Item in Stock | |
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| ID: | 628021 |
| Weight: | 7.69ct |
| Size: | 16 x 12 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 64.60 |
| Item in Stock | |
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| ID: | 636048 |
| Weight: | 7.43ct |
| Size: | 23.9 x 8 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 62.41 |
| Item in Stock | |
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| ID: | 322038 |
| Weight: | 54.71ct |
| Size: | 27.3 x 23.3 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 505.52 |
| Item in Stock | |
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| ID: | 678668 |
| Weight: | 10.30ct |
| Size: | 22.6 x 15.6 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 61.80 |
| Item in Stock | |
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| ID: | 248000 |
| Weight: | 13.14ct |
| Size: | 19.5 x 13.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 121.42 |
| Item in Stock | |
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| ID: | 523723 |
| Weight: | 36.66ct |
| Size: | 39.1 x 16.4 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 241.96 |
| Item in Stock | |
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| ID: | 635344 |
| Weight: | 15.09ct |
| Size: | 18.5 x 14.6 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 126.76 |
| Item in Stock | |
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| ID: | 321921 |
| Weight: | 21.32ct |
| Size: | 27.3 x 13.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 196.99 |
| Item in Stock | |
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| ID: | 679219 |
| Weight: | 12.31ct |
| Size: | 25.9 x 17.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 73.86 |
| Item in Stock | |
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| ID: | 636054 |
| Weight: | 6.36ct |
| Size: | 21.5 x 8 mm |
| Clarity: | Transparent |
| Content: | 1 pc |
| Price: | $ 53.42 |
| Item in Stock | |
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| ID: | 626292 |
| Weight: | 4.31ct |
| Size: | 15.8 x 10 mm |
| Clarity: | Translucent |
| Content: | 1 pc |
| Price: | $ 36.20 |
| Item in Stock | |
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| ID: | 636042 |
| Weight: | 7.10ct |
| Size: | 21.2 x 10.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 59.64 |
| Item in Stock | |
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| ID: | 300454 |
| Weight: | 20.92ct |
| Size: | 25.5 x 14.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 193.30 |
| Item in Stock | |
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| ID: | 628045 |
| Weight: | 9.86ct |
| Size: | 20.4 x 11.2 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 59.16 |
| Item in Stock | |
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| ID: | 302900 |
| Weight: | 23.34ct |
| Size: | 20.8 x 14 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 215.66 |
| Item in Stock | |
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| ID: | 628026 |
| Weight: | 8.42ct |
| Size: | 18.8 x 13.8 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 70.73 |
| Item in Stock | |
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| ID: | 628407 |
| Weight: | 22.64ct |
| Size: | 30.5 x 13.4 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 135.84 |
| Item in Stock | |
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| ID: | 321930 |
| Weight: | 36.09ct |
| Size: | 29.8 x 18.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 333.47 |
| Item in Stock | |
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| ID: | 678670 |
| Weight: | 12.53ct |
| Size: | 17.8 x 13.7 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 75.18 |
| Item in Stock | |
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| ID: | 522638 |
| Weight: | 9.66ct |
| Size: | 22.4 x 13.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 63.76 |
| Item in Stock | |
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| ID: | 718508 |
| Weight: | 10.02ct |
| Size: | 20.8 x 14.2 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 60.12 |
| Item in Stock | |
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| ID: | 679144 |
| Weight: | 21.69ct |
| Size: | 23.8 x 14.7 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 130.14 |
| Item in Stock | |
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| ID: | 636160 |
| Weight: | 6.20ct |
| Size: | 22.9 x 7.6 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 52.08 |
| Item in Stock | |
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| ID: | 628408 |
| Weight: | 20.61ct |
| Size: | 31.9 x 12.2 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 123.66 |
| Item in Stock | |
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| ID: | 679240 |
| Weight: | 14.45ct |
| Size: | 20 x 15 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 86.70 |
| Item in Stock | |
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| ID: | 679213 |
| Weight: | 7.48ct |
| Size: | 19.1 x 10.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 44.88 |
| Item in Stock | |
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| ID: | 635338 |
| Weight: | 13.60ct |
| Size: | 20 x 15 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 114.24 |
| Item in Stock | |
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| ID: | 679223 |
| Weight: | 13.59ct |
| Size: | 20 x 15 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 81.54 |
| Item in Stock | |
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| ID: | 679140 |
| Weight: | 7.32ct |
| Size: | 14.4 x 10.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 43.92 |
| Item in Stock | |
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| ID: | 718506 |
| Weight: | 24.71ct |
| Size: | 42.2 x 16.8 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 148.26 |
| Item in Stock | |
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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
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Overall Rating -> 10 
I always enjoy the selection and the unique cuts I can find here. I would love to see more hex cuts tho! Maybe some rose cuts too!
Overall Rating -> 10
It's mostly good, only some item's are easier to find through the search than the menu
Overall Rating -> 10
Loved everything. High quality, quick shipping, and authentication included.
Overall Rating -> 10
I trust this company to deliver exactly what is offered. I have never had to return a selection of Gems. I appreciate the company's detailed description of their product. It helps this customer find mounts before the gems arrive. Any day of the year one can find a wide selection of gems, be it by price, color, cut, lot or single. Pricing does not jump all over the place and stays reasonable. Be assured your items will arrive in perfect condition as the company's shipping department does a great job.
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Great experience shopping and finding what I was looking for, the only improvement I could think of would be allowing to filter more than one size at a time.
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Love, and have always loved, your website.
Overall Rating -> 10
I have been buying gems for several years off and on and love their selection and great low prices. I started out wanting to get an example of each type of gem but after looking at all the types of gems and reading about them I realize it is almost impossible for me to do. It took me years just to read about them all. Gem Select is the best gem site you can find. For information or to buy. Steve M.
Overall Rating -> 9 
Site is easy to navigate - details on cut, polish, and finish work and techniques were helpful. 3d view or wireframe diagram of stones would be nice.
Overall Rating -> 10
very good
