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[sahr-don-iks, sahr-dn-] /sɑrˈdɒn ɪks, ˈsɑr dn-/
a chalcedony that is used for cameos and has sard and chalcedony of another color, usually white, arranged in straight parallel bands.
Origin of sardonyx
1300-50; Middle English < Latin < Greek sardónyx; see sard, onyx Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for sardonyx
Historical Examples
  • It is a happy phrase, that which closes the career of sardonyx.

    The Martian George Du Maurier
  • Van Busch was in the act of taking back the sardonyx signet-ring.

    The Dop Doctor Clotilde Inez Mary Graves
  • Before Mollie's last word of welcome was uttered, the door opened for the third time, and enter Mr. sardonyx.

    The Unseen Bridgegroom May Agnes Fleming
  • And after dinner she read me the first part of sardonyx; it took three hours.

    The Martian George Du Maurier
  • sardonyx was your mother's favorite stone—she—er—wore the sardonyx signet ring of an ancestor.

    Under the Law Edwina Stanton Babcock
  • On a rock of sardonyx he strove to break it then, but Durendala remained unharmed.

    A Book of Myths Jean Lang
  • Onyx and sardonyx are varieties of agate in which the layers are in even planes of uniform thickness.

  • And I wondered if it would be the sardonyx or the ruby, and hoped it would be the ruby.

    The Haunted Pajamas Francis Perry Elliott
  • It is a cameo head of Elizabeth, cut in a sardonyx, and set in a gold ring, enamelled at the back.

  • Mr. Walraven's reflections were interrupted by the entrance of Mr. sardonyx.

    The Unseen Bridgegroom May Agnes Fleming
British Dictionary definitions for sardonyx


a variety of chalcedony with alternating reddish-brown and white parallel bands, used as a gemstone. Formula: SiO2
Word Origin
C14: via Latin from Greek sardonux, perhaps from sardionsardine² + onux nail
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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