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Gemtypes in Category:
Onyx (310)
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ID:
687783
Weight:
2.31ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.54
Item in Stock
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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
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:
672130
Weight:
4.83ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.59
Item in Stock
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1
2
3
4
5
6
pcs 0 in Cart
ID:
671958
Weight:
4.77ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.45
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
721606
Weight:
9.20ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
11.04
Item in Stock
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ID:
669497
Weight:
20.38ct
Size:
25 x 18 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
24.46
Item in Stock
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ID:
672935
Weight:
4.06ct
Size:
13 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
9.74
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
673179
Weight:
8.06ct (total)
Size:
13 x 11 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
19.34
Item in Stock
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ID:
671955
Weight:
4.74ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.38
Item in Stock
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1
2
3
4
5
pcs 0 in Cart
ID:
721790
Weight:
10.07ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
12.08
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
669675
Weight:
8.57ct (total)
Size:
10.4 x 10.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.28
Item in Stock
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ID:
688032
Weight:
2.69ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
6.46
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:
672136
Weight:
4.54ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
10.90
Item in Stock
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1
2
3
4
5
6
7
pcs 0 in Cart
ID:
688182
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:
687949
Weight:
1.08ct
Size:
7 mm (calibrated)
Clarity:
Opaque
Price:
$
2.59
Item in Stock
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ID:
687941
Weight:
1.43ct
Size:
6.5 mm (calibrated)
Clarity:
Opaque
Price:
$
3.43
Item in Stock
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ID:
671957
Weight:
4.88ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.71
Item in Stock
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ID:
721381
Weight:
10.69ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
12.83
Item in Stock
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ID:
672024
Weight:
19.68ct
Size:
25 x 18 mm (calibrated)
Clarity:
Opaque
Price:
$
47.23
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
669677
Weight:
8.77ct (total)
Size:
10.5 x 10.3 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.52
Item in Stock
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ID:
669106
Weight:
6.48ct (total)
Size:
9.9 x 9.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
7.78
Item in Stock
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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:
687782
Weight:
2.13ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.11
Item in Stock
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ID:
688437
Weight:
1.23ct
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Price:
$
2.95
Item in Stock
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ID:
672132
Weight:
4.89ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.74
Item in Stock
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ID:
722387
Weight:
5.80ct
Size:
16 x 12 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
5.80
Item in Stock
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ID:
667909
Weight:
4.34ct
Size:
10 x 10 mm (calibrated)
Clarity:
Opaque
Price:
$
5.21
Item in Stock
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ID:
673180
Weight:
8.07ct (total)
Size:
13 x 11 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
19.37
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:
688432
Weight:
0.85ct
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
2.04
Item in Stock
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ID:
672023
Weight:
19.31ct
Size:
25 x 18 mm (calibrated)
Clarity:
Opaque
Price:
$
46.34
Item in Stock
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Select
1
2
3
pcs 0 in Cart
ID:
687839
Weight:
3.11ct (total)
Size:
7 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
7.46
Item in Stock
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ID:
668252
Weight:
6.53ct (total)
Size:
9.9 x 9.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
7.84
Item in Stock
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ID:
722406
Weight:
10.50ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
12.60
Item in Stock
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1
2
3
4
5
pcs 0 in Cart
ID:
669679
Weight:
8.50ct (total)
Size:
10.4 x 10.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.20
Item in Stock
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ID:
721545
Weight:
8.42ct (total)
Size:
10.4 x 10.3 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.10
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:
671960
Weight:
4.70ct
Size:
11 x 11 mm (calibrated)
Clarity:
Opaque
Price:
$
11.28
Item in Stock
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ID:
721543
Weight:
8.52ct (total)
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.22
Item in Stock
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ID:
688434
Weight:
0.60ct
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
1.44
Item in Stock
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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:
669678
Weight:
8.38ct (total)
Size:
10.5 x 10.4 mm
Clarity:
Opaque
Content:
2 pcs
Price:
$
10.06
Item in Stock
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ID:
687496
Weight:
1.61ct
Size:
7 mm (calibrated)
Clarity:
Opaque
Price:
$
3.86
Item in Stock
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ID:
721792
Weight:
8.11ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Content:
1 pc
Price:
$
9.73
Item in Stock
More Options & Item Details
ID:
722137
Weight:
21.82ct (total)
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
26.18
Item in Stock
More Options & Item Details
ID:
687657
Weight:
2.11ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.06
Item in Stock
More Options & Item Details
ID:
721330
Weight:
4.46ct
Size:
10.5 x 10.5 mm
Clarity:
Opaque
Price:
$
5.35
Item in Stock
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ID:
672028
Weight:
19.29ct
Size:
25 x 18 mm (calibrated)
Clarity:
Opaque
Price:
$
46.30
Item in Stock
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1
2
3
4
pcs 0 in Cart
ID:
668860
Weight:
4.35ct
Size:
10 x 10 mm (calibrated)
Clarity:
Opaque
Price:
$
12.47
Item in Stock
More Options & Item Details
ID:
722408
Weight:
10.38ct
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Price:
$
12.46
Item in Stock
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ID:
687550
Weight:
1.84ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
4.42
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
More Options & Item Details
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:
722356
Weight:
16.58ct (total)
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
19.90
Item in Stock
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ID:
722357
Weight:
17.51ct (total)
Size:
18 x 13 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
21.01
Item in Stock
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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
More Options & Item Details
ID:
687655
Weight:
2.26ct (total)
Size:
5.5 mm (calibrated)
Clarity:
Opaque
Content:
2 pcs
Price:
$
5.42
Item in Stock
More Options & Item Details
ID:
672438
Weight:
4.24ct
Size:
10 x 10 mm (calibrated)
Clarity:
Opaque
Price:
$
10.18
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 -> 9
I wish there were options for jewelry settings
Posted By Tim in May, 2025
Source: Bizrate
Overall Rating -> 10
It was easy and to the point
Posted By Victorius in May, 2025
Source: Bizrate
Overall Rating -> 8
The website was easy to use and there were a lot of good options, I was satisfied.
Posted By Brielly in January, 2026
Source: Bizrate
Overall Rating -> 10
Always find more niche sizes/shapes as my unconventional designs require from this website. Recommending to fellow designers in the creative atmosphere on the usual, specially due to the quality and certification of gems.
Posted By Sina in April, 2025
Source: Bizrate
Overall Rating -> 10
I can pick and choose from large selection and find just what I need for .y projects, currently my cane.
Posted By Darkstar731 in July, 2025
Source: Bizrate
Overall Rating -> 10
My experience was done with ease
Posted By Barb in October, 2025
Source: Bizrate