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Gemtypes in Category:
Onyx (310)
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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:
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:
669133
Weight:
3.35ct
Size:
9.9 x 9.3 mm
Clarity:
Opaque
Price:
$
4.02
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
669429
Weight:
8.90ct (total)
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.68
Item in Stock
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ID:
687659
Weight:
2.24ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.38
Item in Stock
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ID:
669291
Weight:
26.38ct
Size:
23.1 x 18 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
31.66
Item in Stock
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ID:
687499
Weight:
1.34ct
Size:
7 mm (calibrated)
Clarity:
Opaque
Price:
$
3.22
Item in Stock
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ID:
669132
Weight:
11.43ct
Size:
19.1 x 14.5 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
13.72
Item in Stock
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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:
688343
Weight:
2.90ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
6.96
Item in Stock
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ID:
687654
Weight:
1.98ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
4.75
Item in Stock
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ID:
688339
Weight:
2.84ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.68
Item in Stock
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ID:
722386
Weight:
12.67ct
Size:
18.5 x 13.9 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
15.20
Item in Stock
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ID:
721608
Weight:
9.31ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
11.17
Item in Stock
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1
2
3
pcs 0 in Cart
ID:
721611
Weight:
11.14ct
Size:
17.8 x 10 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
13.37
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:
669899
Weight:
4.31ct
Size:
10.4 x 10.3 mm
Clarity:
Opaque
Price:
$
5.17
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
687842
Weight:
2.65ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
6.36
Item in Stock
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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:
673304
Weight:
12.12ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
29.09
Item in Stock
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ID:
721602
Weight:
10.11ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
12.13
Item in Stock
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ID:
721328
Weight:
4.40ct
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Price:
$
5.28
Item in Stock
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ID:
687658
Weight:
2.36ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.66
Item in Stock
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ID:
672444
Weight:
11.25ct
Size:
20 x 15 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
27.00
Item in Stock
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ID:
672030
Weight:
19.58ct
Size:
25 x 18 mm (calibrated)
Clarity:
Opaque
Price:
$
46.99
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
669295
Weight:
33.29ct
Size:
23.4 x 21.4 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
39.95
Item in Stock
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ID:
669216
Weight:
4.38ct
Size:
10.4 x 10.4 mm
Clarity:
Opaque
Price:
$
5.26
Item in Stock
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1
2
3
4
5
pcs 0 in Cart
ID:
669224
Weight:
4.35ct
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Price:
$
5.22
Item in Stock
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1
2
3
4
5
pcs 0 in Cart
ID:
669299
Weight:
17.01ct
Size:
21.8 x 17.8 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
20.52
Item in Stock
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ID:
669434
Weight:
8.49ct (total)
Size:
10.5 x 10.3 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.19
Item in Stock
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ID:
687944
Weight:
1.12ct
Size:
6.5 mm (calibrated)
Clarity:
Opaque
Price:
$
2.69
Item in Stock
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1
2
3
4
5
pcs 0 in Cart
ID:
669901
Weight:
4.36ct
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Price:
$
5.23
Item in Stock
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1
2
3
4
pcs 0 in Cart
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:
687660
Weight:
2.16ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.18
Item in Stock
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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:
721786
Weight:
9.91ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
11.89
Item in Stock
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ID:
721335
Weight:
4.14ct
Size:
10.4 x 10.4 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
4.97
Item in Stock
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ID:
669220
Weight:
4.16ct
Size:
10.4 x 10.3 mm
Clarity:
Opaque
Price:
$
4.99
Item in Stock
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1
2
3
4
5
6
pcs 0 in Cart
ID:
688028
Weight:
3.20ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
7.68
Item in Stock
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ID:
687832
Weight:
2.86ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
6.86
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:
687661
Weight:
2.06ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
4.94
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:
721339
Weight:
4.19ct
Size:
10.4 x 10.3 mm
Clarity:
Opaque
Price:
$
5.03
Item in Stock
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1
2
3
pcs 0 in Cart
ID:
688341
Weight:
3.07ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
7.37
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
Item in Stock
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ID:
688179
Weight:
1.98ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
4.75
Item in Stock
More Options & Item Details
ID:
721331
Weight:
4.31ct
Size:
10.5 x 10.3 mm
Clarity:
Opaque
Content:
1 pc
Price:
$
5.17
Item in Stock
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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:
721547
Weight:
8.66ct (total)
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.39
Item in Stock
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ID:
672137
Weight:
4.70ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.28
Item in Stock
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1
2
3
pcs 0 in Cart
ID:
668866
Weight:
3.35ct
Size:
9.9 x 9.3 mm
Clarity:
Opaque
Price:
$
4.02
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
669892
Weight:
4.46ct
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Price:
$
5.35
Item in Stock
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ID:
688024
Weight:
2.58ct (total)
Size:
6.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
6.19
Item in Stock
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ID:
668254
Weight:
9.68ct (total)
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
11.62
Item in Stock
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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:
668905
Weight:
6.79ct (total)
Size:
9.9 x 9.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
6.79
Item in Stock
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ID:
722389
Weight:
9.50ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
11.40
Item in Stock
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ID:
721337
Weight:
4.20ct
Size:
10 x 10 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
5.04
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
Item in Stock
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Why Buy Black Onyx from GemSelect?
GemSelect Certified Store Reviews
GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!
Overall Rating -> 10
Easy to use website
Posted By Mel in February, 2026
Source: Bizrate
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
Great experience. I can't wait to explore on the website further.
Posted By Kymmie in September, 2025
Source: Bizrate
Overall Rating -> 9
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
Source: Bizrate
Overall Rating -> 10
I could see the actual gem I was buying
Posted By Bugs in December, 2025
Source: Bizrate
Overall Rating -> 10
the selection is good as are the prices
Posted By Old man in August, 2025
Source: Bizrate