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bone turquoise

noun
  1. fossil bone or ivory that has been colored naturally or artificially so as to resemble turquoise.
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Also called fossil turquoise, odontolite.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for bone turquoise

bone turquoise

noun
  1. fossilized bone or tooth stained blue with iron phosphate and used as a gemstoneAlso called: odontolite
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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