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cacholong
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cacholong
cacholong Min. (ˈkætʃəlɒŋ) [‘Kaschtschilon = {oqq}beautiful stone{cqq} of Kalmucks and Tartars’ (Dana).] A variety of the opal, opaque, bluish-white, porcelain-white, pale yellowish or reddish.1791 Macie in Phil. Trans. LXXXI. 369 That variety of calcedony which is known to mineralogists by the name...
Oxford English Dictionary
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Cacholong
Cacholong, also known as Kalmuck agate, is a form of common opal, although it is often mistaken for agate or chalcedony.
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Vasily Konovalenko
Materials: Beloretsk quartz, agate, cacholong, red jasper, petrified wood, gold-plated silver, silver, sapphire and cloisonné. Height 22 cm. Materials: Jasper, black jasper, white jasper, sapphire, amethyst, quartz, snowflake obsidian, lapis lazuli, petrified wood and cacholong.
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opal
opal (ˈəʊpəl) [ad. L. opal-us (Pliny); cf. Gr. ὀπάλλιος; according to Weigand II. 311, from Skr. upala ‘precious stone, gem’, the opal having been first brought from India. Cf. F. opale (16th c. opalle in Littré).] 1. a. An amorphous form of hydrous silica, somewhat resembling quartz, but in certain...
Oxford English Dictionary
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Foil opal
See also
Cacholong
Synthetic gemstones
References
Jewellery components
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pearl
▪ I. pearl, n.1 (pɜːl) Forms: 4–6 perle, peerle, 5 perl, (perll, perell, -ill, perril, 6 pearel, Sc. peirl(e, peirll), 6–7 pearle, 5– pearl. [ME. a. F. perle (also pesle, pelle, peele, pele, 13–14th c., Godef.) = Pr., It., Sp., Pg. perla, Pg. also perola, med.L. perla (J. de Vitry, a 1244), pella, p...
Oxford English Dictionary
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