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| ID: | 687498 |
| Weight: | 1.58ct |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 3.79 |
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pcs
| ID: | 669895 |
| Weight: | 4.20ct |
| Size: | 10.4 x 10.3 mm |
| Clarity: | Opaque |
| Price: | $ 5.04 |
| Item in Stock | |
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pcs
| ID: | 688180 |
| Weight: | 2.10ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.04 |
| Item in Stock | |
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| ID: | 668332 |
| Weight: | 4.51ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 5.41 |
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| ID: | 687553 |
| Weight: | 2.88ct (total) |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 6.91 |
| Item in Stock | |
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| ID: | 672033 |
| Weight: | 19.82ct |
| Size: | 25 x 18 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 47.57 |
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| ID: | 722401 |
| Weight: | 10.04ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 12.05 |
| Item in Stock | |
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| ID: | 722131 |
| Weight: | 21.42ct (total) |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 25.70 |
| Item in Stock | |
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| ID: | 688345 |
| Weight: | 2.78ct (total) |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 6.94 |
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| ID: | 687659 |
| Weight: | 2.24ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.38 |
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| ID: | 671953 |
| Weight: | 4.85ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.64 |
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pcs
| ID: | 671961 |
| Weight: | 4.89ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.74 |
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pcs
| ID: | 687549 |
| Weight: | 2.24ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.38 |
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| ID: | 669901 |
| Weight: | 4.36ct |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Price: | $ 5.23 |
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pcs
| ID: | 672937 |
| Weight: | 4.16ct |
| Size: | 13 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 9.98 |
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pcs
| ID: | 687657 |
| Weight: | 2.11ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.06 |
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| ID: | 687660 |
| Weight: | 2.16ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.18 |
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| ID: | 669674 |
| Weight: | 8.56ct (total) |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.27 |
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| ID: | 669297 |
| Weight: | 20.08ct |
| Size: | 25 x 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 24.10 |
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| ID: | 672032 |
| Weight: | 19.74ct |
| Size: | 25 x 18 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 47.38 |
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pcs
| ID: | 687652 |
| Weight: | 2.05ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 4.92 |
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| ID: | 722137 |
| Weight: | 21.82ct (total) |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 26.18 |
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| ID: | 688177 |
| Weight: | 2.20ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.28 |
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| ID: | 688338 |
| Weight: | 3.11ct (total) |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 7.46 |
| Item in Stock | |
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| ID: | 668910 |
| Weight: | 9.62ct (total) |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 11.54 |
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| ID: | 721792 |
| Weight: | 8.11ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 9.73 |
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| ID: | 721784 |
| Weight: | 9.95ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.94 |
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| ID: | 722133 |
| Weight: | 22.32ct (total) |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 26.78 |
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| ID: | 687550 |
| Weight: | 1.84ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 4.42 |
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| ID: | 668860 |
| Weight: | 4.35ct |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 12.47 |
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pcs
| ID: | 669429 |
| Weight: | 8.90ct (total) |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.68 |
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| ID: | 688178 |
| Weight: | 2.05ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 4.92 |
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| ID: | 668866 |
| Weight: | 3.35ct |
| Size: | 9.9 x 9.3 mm |
| Clarity: | Opaque |
| Price: | $ 4.02 |
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pcs
| ID: | 687500 |
| Weight: | 1.63ct |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 3.91 |
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| ID: | 722393 |
| Weight: | 4.35ct |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Price: | $ 5.22 |
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pcs
| ID: | 687778 |
| Weight: | 2.11ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.06 |
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| ID: | 673179 |
| Weight: | 8.06ct (total) |
| Size: | 13 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 19.34 |
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| ID: | 722394 |
| Weight: | 4.35ct |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 5.22 |
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| ID: | 721328 |
| Weight: | 4.40ct |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Price: | $ 5.28 |
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pcs
| ID: | 722389 |
| Weight: | 9.50ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.40 |
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| ID: | 669542 |
| Weight: | 28.87ct |
| Size: | 27 x 20 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 34.64 |
| Item in Stock | |
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| ID: | 688031 |
| Weight: | 2.94ct (total) |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 7.06 |
| Item in Stock | |
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| ID: | 669436 |
| Weight: | 8.57ct (total) |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.28 |
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| ID: | 672447 |
| Weight: | 12.30ct |
| Size: | 20 x 15 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 29.52 |
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pcs
| ID: | 672134 |
| Weight: | 4.71ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.30 |
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pcs
| ID: | 721385 |
| Weight: | 10.04ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 12.05 |
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| ID: | 688430 |
| Weight: | 1.01ct |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 2.42 |
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| ID: | 688432 |
| Weight: | 0.85ct |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 2.04 |
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| ID: | 688336 |
| Weight: | 3.07ct (total) |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 7.37 |
| Item in Stock | |
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| ID: | 669431 |
| Weight: | 8.64ct (total) |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.37 |
| Item in Stock | |
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| ID: | 673182 |
| Weight: | 8.12ct (total) |
| Size: | 13 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 19.49 |
| Item in Stock | |
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| ID: | 669495 |
| Weight: | 15.16ct |
| Size: | 26.9 x 14.8 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 18.19 |
| Item in Stock | |
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| ID: | 688175 |
| Weight: | 2.04ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 4.90 |
| Item in Stock | |
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| ID: | 722388 |
| Weight: | 10.59ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 12.71 |
| Item in Stock | |
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pcs
| ID: | 672132 |
| Weight: | 4.89ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.74 |
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| ID: | 722385 |
| Weight: | 22.03ct (total) |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 26.44 |
| Item in Stock | |
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| ID: | 722399 |
| Weight: | 8.51ct |
| Size: | 16.8 x 11.6 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 10.21 |
| Item in Stock | |
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| ID: | 722390 |
| Weight: | 9.35ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 11.22 |
| Item in Stock | |
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| ID: | 688185 |
| Weight: | 1.96ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 4.70 |
| Item in Stock | |
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| ID: | 672438 |
| Weight: | 4.24ct |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 10.18 |
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Why Buy Black Onyx from GemSelect?
- Trusted Worldwide Since 2003
- Supplying natural gemstones to jewelers and collectors in 120+ countries
- Verified natural gemstones
- Professionally photographed and precisely measured
- Secure checkout and insured worldwide delivery
- 30-day returns and satisfaction guarantee
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10 
When I need a specific stone, gem select is my go to shop. Always a good experience and a great product.
Posted By LeAnn in April, 2025
Source: Bizrate
Overall Rating -> 10
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
Source: Bizrate
Overall Rating -> 7 
Okay thank you.
Posted By Bepc61 in March, 2025
Source: Bizrate
Overall Rating -> 8 
Excellent selection of stones -including ones I had never heard of before -nice site and fairly easy to use
Posted By DrD in May, 2025
Source: Bizrate
Overall Rating -> 10
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
Source: Bizrate
Overall Rating -> 10
Easy picking, fast checkout, secure shipping. Cana't ask for anything more than efficiency and a good price.
Posted By Beman in September, 2025
Source: Bizrate
Overall Rating -> 10
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
Source: Bizrate
Overall Rating -> 10
It was easy and to the point
Posted By Victorius in May, 2025
Source: Bizrate
Overall Rating -> 10
I was looking for a site with every type of gem I could want for setting in luxury blades and assumed I would need to look outside the US, but GemSelect made it easy to get everything I wanted without leaving the house! Wide enough selection that I do not feel the need to look elsewhere and pricing the same.
Posted By Razormane in April, 2025
Source: Bizrate
