X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Buy White Onyx Gems

Exact Match not Available: Go Back
4.70ct Natural Black Onyx, Cushion, Opaque, Photo A

4.70ct Natural Black Onyx, Cushion, Opaque

Onyx

4.70ct1 pc
$ 11.28
11 x 11 mm (calibrated)
View Details
Add to Cart
4.77ct Natural Black Onyx, Cushion, Opaque, Photo A

4.77ct Natural Black Onyx, Cushion, Opaque

Onyx

4.77ct1 pc
$ 11.45
11 x 11 mm (calibrated)
View Details
Add to Cart
9.68ctw Natural Black Onyx, Cushion, Opaque, Photo A

9.68ctw Natural Black Onyx, Cushion, Opaque

Onyx

9.68ct total2 pcs
$ 11.62
11 x 11 mm (calibrated)
View Details
Add to Cart
19.62ctw Natural Black Onyx, Pear Shape, Opaque, Photo A

19.62ctw Natural Black Onyx, Pear Shape, Opaque

Onyx

19.62ct total2 pcs
$ 23.54
18 x 13 mm (calibrated)
View Details
Add to Cart
3.22ctw Natural Black Onyx, Round, Opaque, Photo A

3.22ctw Natural Black Onyx, Round, Opaque

Onyx

3.22ct total2 pcs
$ 7.73
7 mm (calibrated)
View Details
Add to Cart
4.88ct Natural Black Onyx, Cushion, Opaque, Photo A

4.88ct Natural Black Onyx, Cushion, Opaque

Onyx

4.88ct1 pc
$ 11.71
11 x 11 mm (calibrated)
View Details
Add to Cart
11.60ct Natural Black Onyx, Pear Shape, Opaque, Photo A

11.60ct Natural Black Onyx, Pear Shape, Opaque

Onyx

11.60ct1 pc
$ 13.92
19.4 x 14.2 mm
View Details
Add to Cart
1.48ct Natural Black Onyx, Round, Opaque, Photo A

1.48ct Natural Black Onyx, Round, Opaque

Onyx

1.48ct1 pc
$ 3.55
7 mm (calibrated)
View Details
Add to Cart
1.99ctw Natural Black Onyx, Round, Opaque, Photo A

1.99ctw Natural Black Onyx, Round, Opaque

Onyx

1.99ct total2 pcs
$ 4.78
5.5 mm (calibrated)
View Details
Add to Cart
2.13ctw Natural Black Onyx, Round, Opaque, Photo A

2.13ctw Natural Black Onyx, Round, Opaque

Onyx

2.13ct total2 pcs
$ 5.11
5.5 mm (calibrated)
View Details
Add to Cart
11.00ct Natural Black Onyx, Pear Shape, Opaque, Photo A

11.00ct Natural Black Onyx, Pear Shape, Opaque

Onyx

11.00ct1 pc
$ 13.20
18 x 13 mm (calibrated)
View Details
Add to Cart
2.32ctw Natural Black Onyx, Round, Opaque, Photo A

2.32ctw Natural Black Onyx, Round, Opaque

Onyx

2.32ct total2 pcs
$ 5.57
5.5 mm (calibrated)
View Details
Add to Cart
8.57ctw Natural Black Onyx, Heart, Opaque, Photo A

8.57ctw Natural Black Onyx, Heart, Opaque

Onyx

8.57ct total2 pcs
$ 10.28
10.5 x 10.5 mm
View Details
Add to Cart
20.03ctw Natural Black Onyx, Pear Shape, Opaque, Photo A

20.03ctw Natural Black Onyx, Pear Shape, Opaque

Onyx

20.03ct total2 pcs
$ 24.04
18 x 13 mm (calibrated)
View Details
Add to Cart
4.20ct Natural Black Onyx, Heart, Opaque, Photo A

4.20ct Natural Black Onyx, Heart, Opaque

Onyx

4.20ct1 pc
$ 5.04
10.4 x 10.3 mm
View Details
Add to Cart
2.33ctw Natural Black Onyx, Round, Opaque, Photo A

2.33ctw Natural Black Onyx, Round, Opaque

Onyx

2.33ct total2 pcs
$ 5.59
5.5 mm (calibrated)
View Details
Add to Cart
1.61ct Natural Black Onyx, Round, Opaque, Photo A

1.61ct Natural Black Onyx, Round, Opaque

Onyx

1.61ct1 pc
$ 3.86
7 mm (calibrated)
View Details
Add to Cart
1.23ct Natural Black Onyx, Round, Opaque, Photo A

1.23ct Natural Black Onyx, Round, Opaque

Onyx

1.23ct1 pc
$ 2.95
5.5 mm (calibrated)
View Details
Add to Cart
8.56ctw Natural Black Onyx, Heart, Opaque, Photo A

8.56ctw Natural Black Onyx, Heart, Opaque

Onyx

8.56ct total2 pcs
$ 10.27
10.5 x 10.3 mm
View Details
Add to Cart
8.67ctw Natural Black Onyx, Heart, Opaque, Photo A

8.67ctw Natural Black Onyx, Heart, Opaque

Onyx

8.67ct total2 pcs
$ 10.40
10 x 10 mm (calibrated)
View Details
Add to Cart
4.24ct Natural Black Onyx, Heart, Opaque, Photo A

4.24ct Natural Black Onyx, Heart, Opaque

Onyx

4.24ct1 pc
$ 5.09
10 x 10 mm (calibrated)
View Details
Add to Cart
11.38ct Natural Black Onyx, Pear Shape, Opaque, Photo A

11.38ct Natural Black Onyx, Pear Shape, Opaque

Onyx

11.38ct1 pc
$ 13.66
18 x 13 mm (calibrated)
View Details
Add to Cart
3.36ctw Natural Black Onyx, Round, Opaque, Photo A

3.36ctw Natural Black Onyx, Round, Opaque

Onyx

3.36ct total2 pcs
$ 8.06
7.5 mm (calibrated)
View Details
Add to Cart
1.70ctw Natural Black Onyx, Round, Opaque, Photo A

1.70ctw Natural Black Onyx, Round, Opaque

Onyx

1.70ct total2 pcs
$ 3.40
5.5 mm (calibrated)
View Details
Add to Cart
26.38ct Natural Black Onyx, Baguette, Opaque, Photo A

26.38ct Natural Black Onyx, Baguette, Opaque

Onyx

26.38ct1 pc
$ 31.66
23.1 x 18 mm
View Details
Add to Cart
9.97ct Natural Black Onyx, Pear Shape, Opaque, Photo A

9.97ct Natural Black Onyx, Pear Shape, Opaque

Onyx

9.97ct1 pc
$ 11.96
18 x 13 mm (calibrated)
View Details
Add to Cart
2.31ctw Natural Black Onyx, Round, Opaque, Photo A

2.31ctw Natural Black Onyx, Round, Opaque

Onyx

2.31ct total2 pcs
$ 5.54
6.5 mm (calibrated)
View Details
Add to Cart
3.10ctw Natural Black Onyx, Round, Opaque, Photo A

3.10ctw Natural Black Onyx, Round, Opaque

Onyx

3.10ct total2 pcs
$ 7.44
7 mm (calibrated)
View Details
Add to Cart
9.19ct Natural Black Onyx, Pear Shape, Opaque, Photo A

9.19ct Natural Black Onyx, Pear Shape, Opaque

Onyx

9.19ct1 pc
$ 11.03
18 x 13 mm (calibrated)
View Details
Add to Cart
2.05ctw Natural Black Onyx, Round, Opaque, Photo A

2.05ctw Natural Black Onyx, Round, Opaque

Onyx

2.05ct total2 pcs
$ 4.92
5.5 mm (calibrated)
View Details
Add to Cart
21.82ctw Natural Black Onyx, Pear Shape, Opaque, Photo A

21.82ctw Natural Black Onyx, Pear Shape, Opaque

Onyx

21.82ct total2 pcs
$ 26.18
18 x 13 mm (calibrated)
View Details
Add to Cart
8.59ctw Natural Black Onyx, Heart, Opaque, Photo A

8.59ctw Natural Black Onyx, Heart, Opaque

Onyx

8.59ct total2 pcs
$ 10.31
10 x 10 mm (calibrated)
View Details
Add to Cart

Why Buy White 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 -> 8 star ratings

First time using this website. It was both exciting finding things in my price range and things Iam gonna save up for and use in other pieces. I love that the picture of the gem is the exact gem I'll be buying. I haven't tested the gems yes but they said they sold me 100% natural gems.

Posted By Salvo in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love the precise descriptions and calibrations of hte loose gemstones. Would like to have seen more variety in the size gem I was looking for.

Posted By RenoRose in January, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

It's always a pleasure doing business with Gem Select. Outstanding products ant very reasonable prices. Thank You One and All.

Posted By G.W. or Bakyow in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

It was fine . Wish there had been more round stones to select from

Posted By Emm in January, 2026
Source: Bizrate

Overall Rating -> 9 star ratings

I wish there were options for jewelry settings

Posted By Tim in May, 2025
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
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image