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
20.08ct Natural Black Onyx, Pear Shape, Opaque, Photo A

20.08ct Natural Black Onyx, Pear Shape, Opaque

Onyx

20.08ct1 pc
$ 24.10
25 x 18 mm (calibrated)
View Details
Add to Cart
10.11ct Natural Black Onyx, Pear Shape, Opaque, Photo A

10.11ct Natural Black Onyx, Pear Shape, Opaque

Onyx

10.11ct1 pc
$ 10.11
18 x 13 mm (calibrated)
View Details
Add to Cart
4.83ct Natural Black Onyx, Cushion, Opaque, Photo A

4.83ct Natural Black Onyx, Cushion, Opaque

Onyx

4.83ct1 pc
$ 11.59
11 x 11 mm (calibrated)
View Details
Add to Cart
1.01ct Natural Black Onyx, Round, Opaque, Photo A

1.01ct Natural Black Onyx, Round, Opaque

Onyx

1.01ct1 pc
$ 2.42
5.5 mm (calibrated)
View Details
Add to Cart
2.11ctw Natural Black Onyx, Round, Opaque, Photo A

2.11ctw Natural Black Onyx, Round, Opaque

Onyx

2.11ct total2 pcs
$ 5.06
5.5 mm (calibrated)
View Details
Add to Cart
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
10.99ct Natural Black Onyx, Pear Shape, Opaque, Photo A

10.99ct Natural Black Onyx, Pear Shape, Opaque

Onyx

10.99ct1 pc
$ 13.19
18 x 13 mm (calibrated)
View Details
Add to Cart
2.96ctw Natural Black Onyx, Round, Opaque, Photo A

2.96ctw Natural Black Onyx, Round, Opaque

Onyx

2.96ct total2 pcs
$ 7.10
7 mm (calibrated)
View Details
Add to Cart
8.77ctw Natural Black Onyx, Heart, Opaque, Photo A

8.77ctw Natural Black Onyx, Heart, Opaque

Onyx

8.77ct total2 pcs
$ 10.52
10.5 x 10.3 mm
View Details
Add to Cart
17.01ct Natural Black Onyx, Pear Shape, Opaque, Photo A

17.01ct Natural Black Onyx, Pear Shape, Opaque

Onyx

17.01ct1 pc
$ 20.52
21.8 x 17.8 mm
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
7 mm (calibrated)
View Details
Add to Cart
17.76ctw Natural Black Onyx, Pear Shape, Opaque, Photo A

17.76ctw Natural Black Onyx, Pear Shape, Opaque

Onyx

17.76ct total2 pcs
$ 21.31
18 x 13 mm (calibrated)
View Details
Add to Cart
9.48ct Natural Black Onyx, Pear Shape, Opaque, Photo A

9.48ct Natural Black Onyx, Pear Shape, Opaque

Onyx

9.48ct1 pc
$ 11.38
18 x 13 mm (calibrated)
View Details
Add to Cart
4.66ct Natural Black Onyx, Cushion, Opaque, Photo A

4.66ct Natural Black Onyx, Cushion, Opaque

Onyx

4.66ct1 pc
$ 11.18
11 x 11 mm (calibrated)
View Details
Add to Cart
4.35ct Natural Black Onyx, Heart, Opaque, Photo A

4.35ct Natural Black Onyx, Heart, Opaque

Onyx

4.35ct1 pc
$ 5.22
10.5 x 10.4 mm
View Details
Add to Cart
20.88ct Natural Black Onyx, Oval, Opaque, Photo A

20.88ct Natural Black Onyx, Oval, Opaque

Onyx

20.88ct1 pc
$ 112.75
22.1 x 15.8 mm
View Details
Add to Cart
2.06ctw Natural Black Onyx, Round, Opaque, Photo A

2.06ctw Natural Black Onyx, Round, Opaque

Onyx

2.06ct total2 pcs
$ 4.94
6.5 mm (calibrated)
View Details
Add to Cart
4.74ct Natural Black Onyx, Cushion, Opaque, Photo A

4.74ct Natural Black Onyx, Cushion, Opaque

Onyx

4.74ct1 pc
$ 11.38
11 x 11 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 x 10 mm (calibrated)
View Details
Add to Cart
1.96ctw Natural Black Onyx, Round, Opaque, Photo A

1.96ctw Natural Black Onyx, Round, Opaque

Onyx

1.96ct total2 pcs
$ 4.70
5.5 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
8.07ctw Natural Black Onyx, Oval, Opaque, Photo A

8.07ctw Natural Black Onyx, Oval, Opaque

Onyx

8.07ct total2 pcs
$ 19.37
13 x 11 mm (calibrated)
View Details
Add to Cart
8.61ctw Natural Black Onyx, Heart, Opaque, Photo A

8.61ctw Natural Black Onyx, Heart, Opaque

Onyx

8.61ct total2 pcs
$ 10.33
10.5 x 10.4 mm
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
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 10.3 mm
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
4.31ct Natural Black Onyx, Heart, Opaque, Photo A

4.31ct Natural Black Onyx, Heart, Opaque

Onyx

4.31ct1 pc
$ 5.17
10.5 x 10.3 mm
View Details
Add to Cart
10.10ct Natural Black Onyx, Pear Shape, Opaque, Photo A

10.10ct Natural Black Onyx, Pear Shape, Opaque

Onyx

10.10ct1 pc
$ 12.12
18 x 13 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
9.70ctw Natural Black Onyx, Cushion, Opaque, Photo A

9.70ctw Natural Black Onyx, Cushion, Opaque

Onyx

9.70ct total2 pcs
$ 11.64
11 x 11 mm (calibrated)
View Details
Add to Cart
11.40ct Natural Black Onyx, Oval, Opaque, Photo A

11.40ct Natural Black Onyx, Oval, Opaque

Onyx

11.40ct1 pc
$ 27.36
18 x 13 mm (calibrated)
View Details
Add to Cart
4.46ct Natural Black Onyx, Heart, Opaque, Photo A

4.46ct Natural Black Onyx, Heart, Opaque

Onyx

4.46ct1 pc
$ 5.35
10.5 x 10.5 mm
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 -> 10 star ratings

I have been very happy with my prior purchases and enjoy the website experience.

Posted By Trouble in November, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The checkout said the my ccv was invalid. i had to use another card.

Posted By Ron in April, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Was a good experience.

Posted By Tim in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

On the clarity options it goes "and better" so if youre looking for si specifically and you click si and better it still shows you basically everything. It just removes the opaques. Itd be nice if it was vs only, vss only, si only, etc

Posted By Iamnotakrustykrab in December, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I have purchased stones from gem select in the past and have been very satisfied. I expect to repeat that experience with this purchase as well

Posted By Marti in July, 2025
Source: Bizrate

Overall Rating -> 9 star ratings

The purchasing process is fairly quick and straightforward and for me user friendly so it probably took more or less than 3 minutes to purchase and pay for the items. I wish there was a discount offer for multiple items to encourage us buyers to purchase more an incentive and add more sales in your end. Besides that, it's been a great purchasing experience and will continue to shop as I am a repeat customer and have bought from your store many times before. Thank you.

Posted By Emmanuel in October, 2025
Source: Bizrate
→ View All GemSelect Reviews on Bizrate
Enlarged Gemstone Image