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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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Black Onyx
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2.11ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.20

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4.89ct Black Onyx, Cushion, Opaque

11 x 11 mm (calibrated)

$ 9.74

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10.38ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 10.34

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2.58ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 5.14

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4.85ct Black Onyx, Cushion, Opaque

11 x 11 mm (calibrated)

$ 9.66

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4.35ct Black Onyx, Heart, Opaque

10 x 10 mm (calibrated)

$ 10.35

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21.42ctw Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 21.33

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8.52ctw Black Onyx, Heart, Opaque

10.5 x 10.4 mm

$ 8.48

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8.54ctw Black Onyx, Heart, Opaque

10.5 x 10.4 mm

$ 8.51

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19.68ct Black Onyx, Oval, Opaque

25 x 18 mm (calibrated)

$ 39.20

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4.56ct Black Onyx, Cushion, Opaque

11 x 11 mm (calibrated)

$ 9.08

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10.99ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 10.95

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9.20ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 9.16

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4.12ct Black Onyx, Heart, Opaque

10 x 10 mm (calibrated)

$ 4.10

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16.43ct Black Onyx, Oval, Opaque

21.9 x 18.7 mm

$ 32.73

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2.31ctw Black Onyx, Round, Opaque

6.5 mm (calibrated)

$ 4.60

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4.66ct Black Onyx, Cushion, Opaque

11 x 11 mm (calibrated)

$ 9.28

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6.79ctw Black Onyx, Trillion, Opaque

9.9 x 9.4 mm

$ 5.64

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20.08ct Black Onyx, Pear Shape, Opaque

25 x 18 mm (calibrated)

$ 20.00

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1.42ct Black Onyx, Round, Opaque

7 mm (calibrated)

$ 2.83

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2.36ctw Black Onyx, Round, Opaque

5.5 mm (calibrated)

$ 4.70

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10.04ct Black Onyx, Pear Shape, Opaque

18 x 13 mm (calibrated)

$ 10.00

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3.36ctw Black Onyx, Round, Opaque

7.5 mm (calibrated)

$ 6.69

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3.17ctw Black Onyx, Round, Opaque

7 mm (calibrated)

$ 6.32

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Why Buy Onyx from GemSelect?

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Very neat and to the point

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Easy to use. Many options to find the right gemstone

Posted By Liz in May, 2026
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selection was broad and the check out was quick. Great site

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Posted By ToRa.62 in April, 2026
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