Sardonyx (noun) Definition, Meaning & Examples

noun
  1. a chalcedony that is used for cameos and has sard and chalcedony of another color, usually white, arranged in straight parallel bands.
noun
  1. a variety of chalcedony with alternating reddish-brown and white parallel bands, used as a gemstone. Formula: SiO 2
Sardonyx (noun) Definition, Meaning & Examples

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