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A greenish chrysoberyl that appears red in artificial light, used as a gemstone.

[German Alexandrit, after Alexander I.]
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 green variety of chrysoberyl used as a gemstone
[C19: named after Alexander I (1777–1825), tsar of Russia (1801–25); see -ite1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌæl ɪgˈzæn draɪt, -ˈzɑn-)

a variety of chrysoberyl, green by daylight and red-violet by artificial light, used as a gem.
[1830–40; after Alexander I of Russia; see -ite1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.alexandrite - a green variety of chrysoberyl used as a gemstonealexandrite - a green variety of chrysoberyl used as a gemstone
chrysoberyl - a rare hard yellow green mineral consisting of beryllium aluminate in crystal form; used as a gemstone
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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Category one includes gemstones such as diamonds, sapphire, emerald, black opal, demantuit, alexandrite, chrysoberyl and all artificial gemstones made in modern ways.
Q-Switched lasers are further segmented into Q-switched Nd: YAG, ruby and alexandrite lasers.
SNA-001 was also evaluated in conjunction with a 1064 Nd:YAG and 755 nm Alexandrite laser for the reduction of light hair, showing a significant reduction from baseline and providing a potential path to regulatory clearance.
The company invited all prospective home buyers and area agents to attend a Model Grand Opening from 11:00 to 14:00 on 12 January 2019 and the event will feature a complimentary food truck lunch, giveaways and tours of the new Alexandrite, Coral and Lapis models.
[USPRwire, Wed Jan 02 2019] The increasing significance given to aesthetics and beauty in the modernized and changing lifestyles is providing a boost to the Alexandrite laser treatment Market The major enhancements with the use of alexandrite laser treatment help cater to the needs of consumers.
In order to reach stem cells in the hair follicle, you can't use superficial wavelengths, so we end up using the 755-nm alexandrite laser, 810-nm diode laser, or the 1,064-nm long-pulsed Nd:YAG laser for the most part in order to get our result.
Nd:YAG lasers work best for red and black ink, while alexandrite lasers work best for green and blue ink.
Q-switched lasers include the Q-switched ruby laser (694 nm), Q-switched neodymium-doped yttrium-aluminum-garnet (Nd:YAG) (532 nm and 1 064 nm) and Q-switched alexandrite laser (755 nm).
There are three types of laser used for hair removal: Alexandrite, Diode and ND-Yag Cairo-based dermatologist Dr.
There are also diamonds, sapphires, rubies, emeralds, natural pearls and coral and collector's gemstones, among which are a Paraiba tourmaline (lot 1184) with a crystalline colour and an alexandrite weighing 11.63 carats (lot 1132).