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Home Gemstones Onyx

Loose Onyx Gemstones: Black Onyx, White Onyx and Banded Onyx for Jewelry | Onyx Carvings

Onyx Weight
Onyx Size
Onyx Clarity
Onyx Price

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For Example: 8-9
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Black Onyx
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19.24ct Black Onyx, Pear Shape, Opaque

24.9 x 16.9 mm

$ 19.16

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11.00ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 10.96

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10.10ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 10.06

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3.14ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 6.26

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8.51ct Black Onyx, Pear Shape, Opaque

16.8 x 11.6 mm

$ 8.47

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4.20ct Black Onyx, Oval, Opaque

13 x 11 mm (calibrated)

$ 8.37

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4.20ct Black Onyx, Heart, Opaque

10.4 x 10.3 mm

$ 4.18

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2.17ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.32

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19.62ctw Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 19.54

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17.01ct Black Onyx, Pear Shape, Opaque

21.8 x 17.8 mm

$ 17.03

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4.38ct Black Onyx, Heart, Opaque

10.4 x 10.4 mm

$ 4.37

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20.38ct Black Onyx, Pear Shape, Opaque

25 x 18 mm (calibrated)

$ 20.30

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1.98ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 3.94

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8.67ctw Black Onyx, Heart, Opaque

10 x 10 mm (calibrated)

$ 8.63

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2.26ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.50

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8.31ctw Black Onyx, Heart, Opaque

10 x 10 mm (calibrated)

$ 8.28

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2.90ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 5.78

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9.56ctw Black Onyx, Cushion, Opaque

11 x 11 mm (calibrated)

$ 9.52

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4.35ct Black Onyx, Heart, Opaque

10.5 x 10.3 mm

$ 4.33

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8.92ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 8.88

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2.41ctw Black Onyx, Round, Opaque

6.5 mm (calibrated)

$ 4.80

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3.03ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 6.03

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8.67ctw Black Onyx, Heart, Opaque

10.5 x 10.3 mm

$ 7.20

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2.93ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 5.83

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Why Buy 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 feel Gemselect is a trustworthy company to buy from

Posted By Becky in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Love beauty, color, quality, and price of these gems. Personal projects and will come here soon and everytime.

Posted By Darkstar in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Enjoy every moment

Posted By Ferns in October, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

So far So good

Posted By VH-1 in July, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Excellent options

Posted By CJ in February, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

Found a rock that met my need. Bought it!

Posted By Skot in May, 2026
Source: Bizrate
Enlarged Gemstone Image