• synonyms


[lab-ruh-daw-rahyt, lab-ruh-dawr-ahyt]
  1. a feldspar mineral of the plagioclase group, often characterized by a brilliant change of colors, with blue and green most common.
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Origin of labradorite

1805–15; named after Labrador, where first discovered; see -ite1
Related formslab·ra·dor·it·ic [lab-ruh-daw-rit-ik] /ˌlæb rə dɔˈrɪt ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for labradorite

Historical Examples

  • It would be just as sensible to say that labradorite, which is rare, should be as costly as diamonds.

    The Story of the Trapper

    A. C. Laut

  • The bed of the country here is Archan rock, and many beautiful specimens of labradorite dot the shores.

  • Of the different colors shown by labradorite blue and 78 green are the most common, yellow and red least so.

  • Labradorite is a common rock-forming mineral, especially in the older rocks.

  • The second species of Feldspar which may be mentioned as of use as an ornamental stone is labradorite.

British Dictionary definitions for labradorite


  1. a blue, green, or reddish-brown feldspar mineral of the plagioclase series: used as a decorative stone. Formula: CaAl 2 Si 2 O 8 .NaAlSi 3 O 8
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Word Origin

C18: named after Labrador, where it was found; see -ite 1
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

labradorite in Science


[lăbrə-dôr′īt′, -dô-rīt′]
  1. A blue, gray, green, or brown triclinic mineral that is a variety of plagioclase feldspar. It occurs in igneous rocks.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.