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| ID: | 722392 |
| Weight: | 10.00ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 12.00 |
| Item in Stock | |
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| ID: | 668258 |
| Weight: | 9.56ct (total) |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 11.47 |
| Item in Stock | |
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| ID: | 722132 |
| Weight: | 19.62ct (total) |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 23.54 |
| Item in Stock | |
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| ID: | 667909 |
| Weight: | 4.34ct |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 5.21 |
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| ID: | 721608 |
| Weight: | 9.31ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.17 |
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| ID: | 671957 |
| Weight: | 4.88ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.71 |
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| ID: | 721607 |
| Weight: | 10.44ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 12.53 |
| Item in Stock | |
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| ID: | 668337 |
| Weight: | 10.74ct |
| Size: | 19.1 x 14.5 mm |
| Clarity: | Opaque |
| Price: | $ 9.89 |
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| ID: | 721542 |
| Weight: | 8.89ct (total) |
| Size: | 10.5 x 10.5 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.67 |
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| ID: | 672028 |
| Weight: | 19.29ct |
| Size: | 25 x 18 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 46.30 |
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| ID: | 721788 |
| Weight: | 8.70ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 10.44 |
| Item in Stock | |
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| ID: | 688186 |
| Weight: | 2.33ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.59 |
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| ID: | 687944 |
| Weight: | 1.12ct |
| Size: | 6.5 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 2.69 |
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| ID: | 688435 |
| Weight: | 1.20ct |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 2.88 |
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| ID: | 669671 |
| Weight: | 8.31ct (total) |
| Size: | 10.4 x 10.4 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 9.97 |
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| ID: | 721337 |
| Weight: | 4.20ct |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 5.04 |
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| ID: | 672023 |
| Weight: | 19.31ct |
| Size: | 25 x 18 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 46.34 |
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| ID: | 673313 |
| Weight: | 11.40ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 27.36 |
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| ID: | 722391 |
| Weight: | 13.39ct |
| Size: | 18.3 x 14.1 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 16.07 |
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| ID: | 721332 |
| Weight: | 4.46ct |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 5.35 |
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| ID: | 721550 |
| Weight: | 8.43ct (total) |
| Size: | 10.4 x 10.4 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.12 |
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| ID: | 669894 |
| Weight: | 4.22ct |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 5.06 |
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| ID: | 669220 |
| Weight: | 4.16ct |
| Size: | 10.4 x 10.3 mm |
| Clarity: | Opaque |
| Price: | $ 4.99 |
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| ID: | 669536 |
| Weight: | 19.24ct |
| Size: | 24.9 x 16.9 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 23.09 |
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| ID: | 669223 |
| Weight: | 4.26ct |
| Size: | 10.4 x 10.3 mm |
| Clarity: | Opaque |
| Price: | $ 5.11 |
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| ID: | 672444 |
| Weight: | 11.25ct |
| Size: | 20 x 15 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 27.00 |
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| ID: | 721609 |
| Weight: | 10.11ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 10.11 |
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| ID: | 722397 |
| Weight: | 10.51ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 12.61 |
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| ID: | 722404 |
| Weight: | 11.28ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 13.54 |
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| ID: | 669677 |
| Weight: | 8.77ct (total) |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.52 |
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| ID: | 688179 |
| Weight: | 1.98ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 4.75 |
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| ID: | 687949 |
| Weight: | 1.08ct |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 2.59 |
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pcs
| ID: | 672932 |
| Weight: | 3.97ct |
| Size: | 13 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 9.53 |
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pcs
| ID: | 687495 |
| Weight: | 1.23ct |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 2.95 |
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pcs
| ID: | 721383 |
| Weight: | 9.97ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 11.96 |
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| ID: | 721793 |
| Weight: | 9.82ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 11.78 |
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| ID: | 721602 |
| Weight: | 10.11ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 12.13 |
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| ID: | 686815 |
| Weight: | 3.27ct (total) |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 7.85 |
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| ID: | 721610 |
| Weight: | 10.30ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 12.36 |
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| ID: | 672129 |
| Weight: | 4.71ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.30 |
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| ID: | 671955 |
| Weight: | 4.74ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.38 |
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| ID: | 669900 |
| Weight: | 4.36ct |
| Size: | 10.5 x 10.3 mm |
| Clarity: | Opaque |
| Price: | $ 5.23 |
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| ID: | 722134 |
| Weight: | 20.57ct (total) |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 24.68 |
| Item in Stock | |
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| ID: | 687551 |
| Weight: | 2.17ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.21 |
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| ID: | 687663 |
| Weight: | 2.11ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.06 |
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| ID: | 687558 |
| Weight: | 2.41ct (total) |
| Size: | 6.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.78 |
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| ID: | 687499 |
| Weight: | 1.34ct |
| Size: | 7 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 3.22 |
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pcs
| ID: | 672229 |
| Weight: | 4.70ct |
| Size: | 11 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 11.28 |
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| ID: | 721549 |
| Weight: | 8.54ct (total) |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.25 |
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| ID: | 721334 |
| Weight: | 3.90ct |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 4.68 |
| Item in Stock | |
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| ID: | 669496 |
| Weight: | 26.89ct |
| Size: | 30.2 x 20.5 mm |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 32.27 |
| Item in Stock | |
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| ID: | 668251 |
| Weight: | 8.67ct (total) |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.40 |
| Item in Stock | |
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| ID: | 684427 |
| Weight: | avg. 0.16 ct / each |
| Size: | 3.5 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 0.49 |
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pcs
| ID: | 721540 |
| Weight: | 8.50ct (total) |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.20 |
| Item in Stock | |
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| ID: | 722405 |
| Weight: | 9.38ct |
| Size: | 18 x 13 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 11.26 |
| Item in Stock | |
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| ID: | 669493 |
| Weight: | 27.22ct |
| Size: | 25 x 18 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 1 pc |
| Price: | $ 32.66 |
| Item in Stock | |
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| ID: | 668904 |
| Weight: | 8.67ct (total) |
| Size: | 10 x 10 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 10.40 |
| Item in Stock | |
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| ID: | 687548 |
| Weight: | 2.11ct (total) |
| Size: | 5.5 mm (calibrated) |
| Clarity: | Opaque |
| Content: | 2 pcs |
| Price: | $ 5.06 |
| Item in Stock | |
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| ID: | 672936 |
| Weight: | 4.20ct |
| Size: | 13 x 11 mm (calibrated) |
| Clarity: | Opaque |
| Price: | $ 10.08 |
| Item in Stock | |
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| ID: | 669892 |
| Weight: | 4.46ct |
| Size: | 10.5 x 10.4 mm |
| Clarity: | Opaque |
| Price: | $ 5.35 |
| Item in Stock | |
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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 
Have made 2 purchases so far from GemSelect and they have been amazing! Anytime I requested additional info, videos or pictures of a particular item, the response was always timely and helpful. This is a great place to buy, if you are looking for loose stones. Highly recommend!
Posted By Britnee Rose in September, 2025
Source: Bizrate
Overall Rating -> 10
I was able to find what I wanted very easily!
Posted By Lenny in January, 2026
Source: Bizrate
Overall Rating -> 10
A pleasant experience and many choices to choose from
Posted By Krackenking in November, 2025
Source: Bizrate
Overall Rating -> 9 
I think therea's no problem
Posted By Napoleon in August, 2025
Source: Bizrate
Overall Rating -> 9
The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.
Posted By Emmanuel in October, 2025
Source: Bizrate
Overall Rating -> 10
So far, my experience was great...Thanks
Posted By Kaydi in May, 2025
Source: Bizrate
Overall Rating -> 10
I'm happy.
Posted By Ray in January, 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
I found exactly what I was looking for and ordered it. I like how you give information on the stones I'm buying. Glad I found you!
Posted By TheP in April, 2025
Source: Bizrate
