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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
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Onyx Price

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For Example: 8-9
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Black Onyx
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21.82ctw Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 21.73

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8.64ctw Black Onyx, Heart, Opaque

10 x 10 mm (calibrated)

$ 8.61

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4.31ct Black Onyx, Heart, Opaque

10.5 x 10.3 mm

$ 4.29

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2.12ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.22

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11.28ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 11.24

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2.74ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 5.46

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6.48ctw Black Onyx, Trillion, Opaque

9.9 x 9.4 mm

$ 6.46

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21.84ct Black Onyx, Oval, Opaque

22 x 15.9 mm

$ 97.89

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9.48ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 9.45

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4.33ct Black Onyx, Heart, Opaque

10 x 10 mm (calibrated)

$ 4.32

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2.94ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 5.86

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4.35ct Black Onyx, Heart, Opaque

10.5 x 10.4 mm

$ 4.33

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22.32ctw Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 22.23

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21.71ctw Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 21.62

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8.25ctw Black Onyx, Oval, Opaque

13 x 11 mm (calibrated)

$ 16.43

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8.57ctw Black Onyx, Heart, Opaque

10.5 x 10.3 mm

$ 8.53

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2.06ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.10

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19.42ct Black Onyx, Oval, Opaque

25 x 18 mm (calibrated)

$ 38.69

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2.24ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.47

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1.96ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 3.90

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2.13ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.24

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8.71ctw Black Onyx, Heart, Opaque

10.5 x 10.4 mm

$ 8.67

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1.16ct Black Onyx, Round, Opaque

6.5 mm (calibrated)

$ 2.31

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8.64ctw Black Onyx, Heart, Opaque

10.5 x 10.3 mm

$ 8.61

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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

Easy to use website

Posted By Mel in February, 2026
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Overall Rating -> 10 star ratings

Very pleasant

Posted By Varun in June, 2026
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Overall Rating -> 10 star ratings

I loved it! Extensive inventory, great prices, I definitely will be buying from here again!

Posted By Lex in April, 2026
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Overall Rating -> 10 star ratings

All good

Posted By DouscheGift in August, 2025
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Overall Rating -> 10 star ratings

Good, hope gem quality is good and genuine

Posted By Varun in May, 2026
Source: Bizrate

Overall Rating -> 10 star ratings

I was able to find what I've been looking for.

Posted By Tree Dog in April, 2026
Source: Bizrate
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