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: 668905
Weight: 6.79ct (total)
Size: 9.9 x 9.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 6.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 721789
Weight: 10.14ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 721384
Weight: 8.80ct
Size: 14.8 x 9.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 10.56
Item in Stock
More Options & Item Details
Add to Cart
ID: 669295
Weight: 33.29ct
Size: 23.4 x 21.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 39.95
Item in Stock
More Options & Item Details
Add to Cart
ID: 668859
Weight: 10.39ct
Size: 19 x 14.5 mm
Clarity: Opaque
Price: $ 12.47
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669296
Weight: 24.74ct
Size: 25.7 x 19.6 mm
Clarity: Opaque
Content: 1 pc
Price: $ 29.69
Item in Stock
More Options & Item Details
Add to Cart
ID: 721551
Weight: 8.82ct (total)
Size: 10.5 x 10.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 669131
Weight: 4.24ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 5.09
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 722142
Weight: 20.03ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 24.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 722136
Weight: 21.71ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 26.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 722407
Weight: 11.38ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 13.66
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721380
Weight: 9.47ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 11.36
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687941
Weight: 1.43ct
Size: 6.5 mm (calibrated)
Clarity: Opaque
Price: $ 3.43
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 668915
Weight: 9.65ct (total)
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 11.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 687559
Weight: 2.06ct (total)
Size: 6.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 4.94
Item in Stock
More Options & Item Details
Add to Cart
ID: 669133
Weight: 3.35ct
Size: 9.9 x 9.3 mm
Clarity: Opaque
Price: $ 4.02
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 688335
Weight: 2.83ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.79
Item in Stock
More Options & Item Details
Add to Cart
ID: 722139
Weight: 21.54ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 25.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 721386
Weight: 9.80ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 11.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 721603
Weight: 9.16ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 10.99
Item in Stock
More Options & Item Details
Add to Cart
ID: 688032
Weight: 2.69ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 722357
Weight: 17.51ct (total)
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 21.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 672137
Weight: 4.70ct
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.28
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669899
Weight: 4.31ct
Size: 10.4 x 10.3 mm
Clarity: Opaque
Price: $ 5.17
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687946
Weight: 1.03ct
Size: 6.5 mm (calibrated)
Clarity: Opaque
Price: $ 2.47
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687832
Weight: 2.86ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.86
Item in Stock
More Options & Item Details
Add to Cart
ID: 721331
Weight: 4.31ct
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: 668255
Weight: 9.56ct (total)
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: 673177
Weight: 8.18ct (total)
Size: 13 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 19.63
Item in Stock
More Options & Item Details
Add to Cart
ID: 668248
Weight: 8.59ct (total)
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 10.31
Item in Stock
More Options & Item Details
Add to Cart
ID: 688024
Weight: 2.58ct (total)
Size: 6.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 721786
Weight: 9.91ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 11.89
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721606
Weight: 9.20ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 11.04
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721791
Weight: 10.10ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 12.12
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 722406
Weight: 10.50ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 12.60
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721333
Weight: 4.12ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 4.94
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669299
Weight: 17.01ct
Size: 21.8 x 17.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 20.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 669678
Weight: 8.38ct (total)
Size: 10.5 x 10.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 669109
Weight: 9.70ct (total)
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: 687836
Weight: 2.74ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.58
Item in Stock
More Options & Item Details
Add to Cart
ID: 672935
Weight: 4.06ct
Size: 13 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 9.74
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 721601
Weight: 10.40ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 672136
Weight: 4.54ct
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 10.90
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 672896
Weight: 20.88ct
Size: 22.1 x 15.8 mm
Clarity: Opaque
Content: 1 pc
Price: $ 112.75
Item in Stock
More Options & Item Details
Add to Cart
ID: 687779
Weight: 2.17ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 5.21
Item in Stock
More Options & Item Details
Add to Cart
ID: 721387
Weight: 8.88ct
Size: 14.5 x 9.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 10.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 687837
Weight: 2.64ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 721376
Weight: 9.48ct
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: 672031
Weight: 19.42ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Price: $ 46.61
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687557
Weight: 2.31ct (total)
Size: 6.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 5.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 668090
Weight: 8.41ct (total)
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 10.09
Item in Stock
More Options & Item Details
Add to Cart
ID: 721544
Weight: 8.66ct (total)
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: 721545
Weight: 8.42ct (total)
Size: 10.4 x 10.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.10
Item in Stock
More Options & Item Details
Add to Cart
ID: 721541
Weight: 8.67ct (total)
Size: 10.5 x 10.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 8.67
Item in Stock
More Options & Item Details
Add to Cart
ID: 721338
Weight: 4.33ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 5.20
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 688460
Weight: 2.43ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 5.83
Item in Stock
More Options & Item Details
Add to Cart
ID: 722400
Weight: 10.14ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.17
Item in Stock
More Options & Item Details
Add to Cart
ID: 688034
Weight: 2.61ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 669134
Weight: 4.24ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 5.09
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 688029
Weight: 2.58ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.19
Item in Stock
More Options & Item Details
Add to Cart
1 - 6

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 love the quality, package and info of your gems.

Posted By Diana in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good Hoping you will increase your inventory especially in the 6mm Thanks

Posted By Ibie in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Very good

Posted By Niska in August, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

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 star ratings

I could see the actual gem I was buying

Posted By Bugs in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

My experience was done with ease

Posted By Barb in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

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 star ratings

I really liked the email, and the link that help return me to the site. I didnt have access to my card info while checking out and I had to put my phone away so I lost the tab. Fortunately, since I did give an email- they sent me a link that brought me back to where I was. Greatly appreciated

Posted By Jag in January, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

I did not have any problems

Posted By Clilrichard in January, 2025
Source: Bizrate
Enlarged Gemstone Image