chalcedony
noun
chal·ce·do·ny kal-ˈse-də-nē 
chal-;
ˈkal-sə-ˌdō-nē ˈchal-,
-ˌdä-
plural chalcedonies
: a translucent variety of quartz of various colors and waxy luster
chalcedonic
ˌkal-sə-ˈdä-nik
adjective 
Example Sentences
Recent Examples on the Web Cartier’s signature use of beads in colorful coral, emeralds and sky-blue chalcedony gives even large-scale designs a sense of relaxed elegance. 
Town & Country, 29 June 2022 The outfit was by 4SDesigns, but that the accompanying chain around his neck was an 18-karat white gold, platinum, chalcedony, turquoise and diamond necklace by Cartier somewhat complicated the point. New York Times, 3 May 2022 The idea for ear cuffs in lapis ($750) or blue chalcedony ($1,040) came from Ms. Byrne’s mother, who no longer wishes to wear heavy earrings. New York Times, 23 Dec. 2021 For instance, Ashley Poust, a postdoctoral researcher in vertebrate paleontology at the San Diego Natural History Museum, is intrigued by the origins of the chalcedony. Erin Fennessy, Popular Science, 23 Feb. 2021 The Rose collection features rings in white chalcedony, diamonds, and sapphires ($29,000) and necklaces in pink opal and amethyst (price on request), as well as watches and bracelets. Stellene Volandes, Town & Country, 4 Jan. 2013 On this chalcedony intaglio from Greece, circa the 2nd or 3rd century BC, a nymph ties up her hair in a ribbon. Vogue, 7 July 2017 See More
Town & Country, 29 June 2022 The outfit was by 4SDesigns, but that the accompanying chain around his neck was an 18-karat white gold, platinum, chalcedony, turquoise and diamond necklace by Cartier somewhat complicated the point. New York Times, 3 May 2022 The idea for ear cuffs in lapis ($750) or blue chalcedony ($1,040) came from Ms. Byrne’s mother, who no longer wishes to wear heavy earrings. New York Times, 23 Dec. 2021 For instance, Ashley Poust, a postdoctoral researcher in vertebrate paleontology at the San Diego Natural History Museum, is intrigued by the origins of the chalcedony. Erin Fennessy, Popular Science, 23 Feb. 2021 The Rose collection features rings in white chalcedony, diamonds, and sapphires ($29,000) and necklaces in pink opal and amethyst (price on request), as well as watches and bracelets. Stellene Volandes, Town & Country, 4 Jan. 2013 On this chalcedony intaglio from Greece, circa the 2nd or 3rd century BC, a nymph ties up her hair in a ribbon. Vogue, 7 July 2017 See More Word History
Etymology
Middle English calcedonie, a precious stone, from Anglo-French, from Late Latin chalcedonius, from Greek Chalkēdōn Chalcedon
First Known Use
13th century, in the meaning defined above