X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Buy Black Onyx Gems

Black Onyx Weight
Black Onyx Size
Black Onyx Clarity
Black Onyx Price

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color
Black Black Onyx
Blue
Brown
Golden
Gray
Green
Multicolor
Orange
Pink
Purple
Red
Turquoise
Violet
White
Yellow
Single
Pairs
Lots
Faceted
Cabochons
X
Clear All
ID: 687492
Weight: 1.59
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 3.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 688178
Weight: 2.05
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 4.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 722392
Weight: 10.00
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 669107
Weight: 8.63
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 10.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 688031
Weight: 2.94
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 7.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 688343
Weight: 2.90
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 721377
Weight: 8.25
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 9.90
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 672447
Weight: 12.30
Size: 20 x 15 mm (calibrated)
Clarity: Opaque
Price: $ 29.52
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721788
Weight: 8.70
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 10.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 687942
Weight: 1.16
Size: 6.5 mm (calibrated)
Clarity: Opaque
Price: $ 2.78
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721784
Weight: 9.95
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 11.94
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687491
Weight: 1.42
Size: 7 mm (calibrated)
Clarity: Opaque
Price: $ 3.41
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 668255
Weight: 9.56
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 11.47
Item in Stock
More Options & Item Details
Add to Cart
ID: 671955
Weight: 4.74
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.38
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669221
Weight: 4.19
Size: 10.5 x 10.3 mm
Clarity: Opaque
Price: $ 5.03
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 671962
Weight: 4.85
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.64
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669900
Weight: 4.36
Size: 10.5 x 10.3 mm
Clarity: Opaque
Price: $ 5.23
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721331
Weight: 4.31
Size: 10.5 x 10.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 5.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 669135
Weight: 4.10
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 4.92
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669297
Weight: 20.08
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 24.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 722398
Weight: 10.08
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 12.10
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 672441
Weight: 3.19
Size: 9.9 x 9.3 mm
Clarity: Opaque
Content: 1 pc
Price: $ 7.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 687777
Weight: 2.12
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 5.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 722385
Weight: 22.03
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 26.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 722386
Weight: 12.67
Size: 18.5 x 13.9 mm
Clarity: Opaque
Content: 1 pc
Price: $ 15.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 722387
Weight: 5.80
Size: 16 x 12 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 5.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 721605
Weight: 9.47
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 11.36
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721794
Weight: 10.32
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 668337
Weight: 10.74
Size: 19.1 x 14.5 mm
Clarity: Opaque
Price: $ 9.89
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 672438
Weight: 4.24
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 10.18
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721610
Weight: 10.30
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 684427
Weight: 0.00
Size: 3.5 mm (calibrated)
Clarity: Opaque
Price: $ 0.49
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721547
Weight: 8.66
Size: 10.5 x 10.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.39
Item in Stock
More Options & Item Details
Add to Cart
ID: 722407
Weight: 11.38
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 13.66
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 668254
Weight: 9.68
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 11.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 721335
Weight: 4.14
Size: 10.4 x 10.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 4.97
Item in Stock
More Options & Item Details
Add to Cart
ID: 721376
Weight: 9.48
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 11.38
Item in Stock
More Options & Item Details
Add to Cart
ID: 721785
Weight: 11.60
Size: 19.4 x 14.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 13.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 669124
Weight: 3.30
Size: 9.9 x 9.4 mm
Clarity: Opaque
Price: $ 3.96
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 688033
Weight: 3.17
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 7.61
Item in Stock
More Options & Item Details
Add to Cart
ID: 687653
Weight: 1.78
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 4.27
Item in Stock
More Options & Item Details
Add to Cart
ID: 669109
Weight: 9.70
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 11.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 721542
Weight: 8.89
Size: 10.5 x 10.5 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 668911
Weight: 6.69
Size: 9.9 x 9.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 8.03
Item in Stock
More Options & Item Details
Add to Cart
ID: 722390
Weight: 9.35
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 11.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 669220
Weight: 4.16
Size: 10.4 x 10.3 mm
Clarity: Opaque
Price: $ 4.99
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 688344
Weight: 2.89
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 672033
Weight: 19.82
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Price: $ 47.57
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 673182
Weight: 8.12
Size: 13 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 19.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 721550
Weight: 8.43
Size: 10.4 x 10.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.12
Item in Stock
More Options & Item Details
Add to Cart
ID: 721790
Weight: 10.07
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 12.08
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 672129
Weight: 4.71
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.30
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669429
Weight: 8.90
Size: 10.5 x 10.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 721544
Weight: 8.66
Size: 10.5 x 10.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.39
Item in Stock
More Options & Item Details
Add to Cart
ID: 668915
Weight: 9.65
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 11.58
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
5
1 - 5

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 star ratings

I needed a very specific color of tourmaline and Gem Select had it. I had to get the client to agree and then ordered the stone. It arrived better than pictured and we all were very happy.

Posted By Tim W in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

GemSelect is always my first choice for purchasing gemstones. The fact that the gems are always exactly as described and pictured on the website has earned my trust many times over. Even when I don't buy, I still love browsing all the beautiful stones. My new favorites are the bright green Tsavorites!

Posted By Lkcisneros in March, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Very good.

Posted By Tommy in December, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Plan on purchasing on an ongoing basis. So far.....so good....

Posted By Jim in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

My whole experience is great.

Posted By Ghs in November, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate
Enlarged Gemstone Image