| emerald(noun, jewelry, gem) | |
| pitchy(adjective, pitch, black, murky, somber) | |
| agate(noun, jewelry, gem) | |
| diamond(noun, jewelry, gem) | |
| chalcedony(noun, jewelry, gem) | |
| amethyst(noun, jewelry, gem) | |
| bloodstone(noun, jewelry, gem) | |
| carbuncle(noun, jewelry, gem) | |
| ebon(adjective, obscure, dark, gloomy, pitch) | |
| inky(adjective, black, colors) | |
| pitch-black(adjective, dark, pitch, black, murky) | |
| ruby(noun, jewelry, gem) | |
| beryl(noun, jewelry, gem) | |
| hyacinth(noun, jewelry, gem) | |
| pitch-dark(adjective, obscure, dark, gloomy, pitch) | |
| sable(adjective, black, colors) | |
| sapphire(noun, jewelry, gem) | |
| charcoal(adjective, obscure, dark, gloomy, pitch) | |
| garnet(noun, jewelry, gem) | |
| jade(noun, gem) |
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| APA | Smart Define. (2015). onyx thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/onyx/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "onyx thesaurus" https://smartdefine.org/onyx/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, onyx thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/onyx/thesaurus/synonyms>. |
| MLA | Smart Define. "onyx thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/onyx/thesaurus/synonyms> |