sardonyx


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Related to sardonyx: Chrysoprasus, birthstones

sardonyx

a variety of chalcedony with alternating reddish-brown and white parallel bands, used as a gemstone. Formula: SiO2

sardonyx

[sär′dän·iks]
(mineralogy)
An onyx characterized by parallel layers of sard, a deep orange-red variety of chalcedony, and a mineral of different color.

sardonyx

August. [Am. Gem Symbolism: Kunz, 319–320]
References in periodicals archive ?
70) Most perplexing, however, is the problem that it is difficult to imagine a lead copy even remotely capturing the translucent beauty of the white and red chalcedony of a sardonyx cameo, which Grassi called "radiant.
Shells are easier to carve than sardonyx and they were very popular with wealthy tourists since the cameo artists managed to achieve a tolerable likeness of the purchaser.
They are found set in rings, brooches, pendants and the like, and were originally created from gemstones with different colours in their makeup, such as sardonyx and cornelian.
Four crew members were taken from the Fraserburgh-registered Elhanan shortly after another vessel, the Banff- registered Sardonyx II, had to be put under tow.
January - garnet or rose quarter February - amethyst or onyx March - aquamarine or bloodstone April - diamond or rock crystal May - emerald or chrysoprase June - alexadrite or moonstone or pearl July - ruby or carmelion August - peridot or sardonyx September - sapphire or lapis October - opal or tourmaline November - topaz or citrine December - zircon or turquoise
The evil effects of the onyx are counteracted if one wears a sardonyx at the same time.
The Greek and Roman jewellers carved fabulous cameos in sardonyx, coral, shell and other workable materials.