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
  • Actual Product Photos
  • Reliable Quality
  • Full Transparency
  • Large Selection
  • Affordable Prices
  • Fast, Secure Global Shipping
ID: 687652
Weight: 2.05ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 4.92
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: 721608
Weight: 9.31ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 11.17
Item in Stock
More Options & Item Details
Select pcs
Add to 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
More Options & Item Details
Add to Cart
ID: 688176
Weight: 1.70ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 4.08
Item in Stock
More Options & Item Details
Add to Cart
ID: 688343
Weight: 2.90ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.96
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: 669489
Weight: 19.19ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 23.03
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: 672933
Weight: 4.22ct
Size: 13 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 8.44
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669544
Weight: 19.71ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 23.65
Item in Stock
More Options & Item Details
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: 721604
Weight: 9.32ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 11.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 667909
Weight: 4.34ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 5.21
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687780
Weight: 2.21ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 5.30
Item in Stock
More Options & Item Details
Add to Cart
ID: 688430
Weight: 1.01ct
Size: 5.5 mm (calibrated)
Clarity: Opaque
Price: $ 2.42
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: 721385
Weight: 10.04ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 12.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 669436
Weight: 8.57ct (total)
Size: 10.5 x 10.3 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 688028
Weight: 3.20ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 7.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 669894
Weight: 4.22ct
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Price: $ 5.06
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 672129
Weight: 4.71ct
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.30
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 688342
Weight: 3.14ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 7.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 687838
Weight: 2.90ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 6.96
Item in Stock
More Options & Item Details
Add to Cart
ID: 669106
Weight: 6.48ct (total)
Size: 9.9 x 9.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 7.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 721381
Weight: 10.69ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 12.83
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 668910
Weight: 9.62ct (total)
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 11.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 687660
Weight: 2.16ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 5.18
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: 722393
Weight: 4.35ct
Size: 10.5 x 10.4 mm
Clarity: Opaque
Price: $ 5.22
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: 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: 721542
Weight: 8.89ct (total)
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: 672132
Weight: 4.89ct
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.74
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 686815
Weight: 3.27ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 7.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 673179
Weight: 8.06ct (total)
Size: 13 x 11 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 19.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 672033
Weight: 19.82ct
Size: 25 x 18 mm (calibrated)
Clarity: Opaque
Price: $ 47.57
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 722395
Weight: 4.29ct
Size: 10.4 x 10.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 5.15
Item in Stock
More Options & Item Details
Add to Cart
ID: 687493
Weight: 1.48ct
Size: 7 mm (calibrated)
Clarity: Opaque
Price: $ 3.55
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687656
Weight: 1.96ct (total)
Size: 5.5 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 4.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 721543
Weight: 8.52ct (total)
Size: 10.5 x 10.4 mm
Clarity: Opaque
Content: 2 pcs
Price: $ 10.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 672135
Weight: 4.92ct
Size: 11 x 11 mm (calibrated)
Clarity: Opaque
Price: $ 11.81
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 668093
Weight: 8.66ct (total)
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 10.39
Item in Stock
More Options & Item Details
Add to Cart
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
Add to Cart
ID: 688337
Weight: 3.22ct (total)
Size: 7 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 7.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 669669
Weight: 8.31ct (total)
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 9.97
Item in Stock
More Options & Item Details
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: 669892
Weight: 4.46ct
Size: 10.5 x 10.4 mm
Clarity: Opaque
Price: $ 5.35
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 687498
Weight: 1.58ct
Size: 7 mm (calibrated)
Clarity: Opaque
Price: $ 3.79
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 669537
Weight: 20.01ct
Size: 24.8 x 15 mm
Clarity: Opaque
Content: 1 pc
Price: $ 24.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 722402
Weight: 10.99ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 13.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 722398
Weight: 10.08ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Price: $ 12.10
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
ID: 668251
Weight: 8.67ct (total)
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 10.40
Item in Stock
More Options & Item Details
Add to Cart
ID: 669499
Weight: 24.81ct
Size: 24.4 x 15.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 29.77
Item in Stock
More Options & Item Details
Add to Cart
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
Add to Cart
ID: 669676
Weight: 8.51ct (total)
Size: 10 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 8.51
Item in Stock
More Options & Item Details
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: 721339
Weight: 4.19ct
Size: 10.4 x 10.3 mm
Clarity: Opaque
Price: $ 5.03
Item in Stock
More Options & Item Details
Select pcs
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: 669220
Weight: 4.16ct
Size: 10.4 x 10.3 mm
Clarity: Opaque
Price: $ 4.99
Item in Stock
More Options & Item Details
Select pcs
Add to Cart
1 - 6

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

I did not have any problems

Posted By Clilrichard in January, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

Site is easy to navigate - details on cut, polish, and finish work and techniques were helpful. 3d view or wireframe diagram of stones would be nice.

Posted By Tb in August, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy and to the point

Posted By Victorius in May, 2025
Source: Bizrate

Overall Rating -> 7 star ratings

Okay thank you.

Posted By Bepc61 in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Easy and convenient

Posted By Butch in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I found what I was looking for...had to look up millimeters to inches. It would be nice to see something, like a quarter, in the pix to show relative size. I plan on buy loose gemstones for every month in the calendar

Posted By TheP in January, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Great experience shopping and finding what I was looking for, the only improvement I could think of would be allowing to filter more than one size at a time.

Posted By Tlicious04 in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

I have ordered from Genselect before and always had a great experience. My go to source!

Posted By Kycaver in October, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
Source: Bizrate
Enlarged Gemstone Image