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Related to sardonyx: Chrysoprasus, birthstones


 (sär-dŏn′ĭks, sär′dn-ĭks′)
An onyx with alternating brown and white bands of sard and other minerals.

[Middle English sardonix, probably from Latin sardonyx, from Greek sardonux : sardion, sard; see sard + onux, onyx, nail; see nogh- in Indo-European roots.]


(Minerals) a variety of chalcedony with alternating reddish-brown and white parallel bands, used as a gemstone. Formula: SiO2
[C14: via Latin from Greek sardonux, perhaps from sardion sardine2 + onux nail]


(sɑrˈdɒn ɪks, ˈsɑr dn-)

an onyx composed of layers of sard and chalcedony of another color, usu. white: used as a gem and to make cameos.
[1300–50; Middle English < Latin < Greek sardónyx; see sard, onyx]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.sardonyx - an onyx characterized by parallel layers of sard and a different colored mineralsardonyx - an onyx characterized by parallel layers of sard and a different colored mineral
onyx - a chalcedony with alternating black and white bands; used in making cameos
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References in periodicals archive ?
Lot 204 is an inscribed 11th- to 12th-century Byzantine religious chalice of enamel, silver, sardonyx and semiprecious stones.
The Byzantine sardonyx bowl that forms the tazza's top section dates from the 9th or 10th century, and was originally acquired in Russia in 1807-08 by the 10th Duke of Hamilton; he believed it to be the holy water stoup that once belonged to Charlemagne.
No specific names of Italian or French lapidaries working in the imperial courts of Jahangir and Shahjahan have ever been found, yet the quality of this cameo, executed in sardonyx with a white ground, illustrates Western influence and the role hard-stonecarving played in the Mughal period, most especially under the patronage of Shahjahan.
These gems included agate, sardonyx, chalcedony and other semi-transparent stones, regarded by today's jewellers as gemstones as distinguished from precious stones, a term used only for diamonds, rubies, sapphires and emeralds.
Gemstones like agate onyx, or sardonyx were the materials of choice for early cameos, while in the 19th century, carvers used such materials such as stone, shell, lava and coral.
Or the maidmother by a crucifix, In yellow pastures sunnywarm, Beneath branchwork of costly sardonyx, Sat smiling', babe in arm.
The most prized cameos are those carved from hardstones such as sardonyx, onyx, malachite and agate along with rare specimens carved from precious and semi-precious stones.