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A variety of tourmaline ranging in color from pinkish red to purplish red, used as a gemstone.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Minerals) a red transparent variety of tourmaline, used as a gemstone
[C18: from Latin rubellus reddish]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ru•bel•lite(ruˈbɛl aɪt, ˈru bəˌlaɪt)
a deep red variety of tourmaline, used as a gem.
[1790–1800; < Latin rubell(us) reddish]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.