Oynx

Explore our black onyx cabochons, polished to a smooth, rounded dome that brings out their deep, glossy black finish.
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  • Black Onyx Round Cabochon 7MM

    Black Onyx Round Cabochon 7MM

    Black Onyx Round Cabochon 7MM
    £4.00
  • Natural Black Onyx Heart Buff Top Signet 10x10mm

    Natural Black Onyx Heart Buff Top Signet 10x10mm

    Natural Black Onyx Heart Buff Top Signet 10x10mm
    £4.00
  • Polished 16x12mm oval black onyx cabochon gemstone

    16x12mm 12 Oval Black Onyx

    16x12mm 12 Oval Black Onyx
    £4.00