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Our Black Onyx Round Cabochons are hand cut and polished from dyed Onyx. These 12mm Black Onyx Round Cabochons are sold as randomly selected single pieces. They are approximately 12mm across, and 4⅓-8mm thick. They have a domed top and a flat bottom. Click here to see all available Onyx. Click here to see all available Accent Cabochons and Facets.
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We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2026
$2.25