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Alexandrite

Tsarstone collectors guide

Alexandrite Guide Forums

Different colors of alexandrite on Aug 6 2009, at 11:37 in Chrysoberyl Species and Variety
Alexandrite occurs in a wide range of colors, but color change resembling fine emerald (green) and ruby (red), depending on the light source is so rare, that most people have never seen one. However, even lower quality alexandrite should change colors from khaki or yellowish green or green in daylight moving to brownish, purple, reddish-purple or red under incandescent light. Mixed light should produce either a grayer color or flashes of the green, purple, and sometimes red or yellow.

Good quality alexandrite is teal, emerald, or blue-green under natural daylight or fluorescent lighting that ideally changes to purple-red or red under regular incandescent light. Often a slightly grey, blue/violet/purple is seen.

alexandrite-guide-banner-colors.jpg

If your stone changes color from purple in daylight to greenish-blue under incandescent light, then instead of genuine alexandrite, you own either a synthetic stone or some other gemstone variety which changes color. It could be sapphire or spinel, although it's very unlikely. I would recommend obtaining a gemstone identification certificate for your gemstone from a reputable laboratory. The most well known gemological laboratories are listed at: Where can I test and appraise my alexandrite?

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Bibliographic details
Page title Different colors of alexandrite
Author Marisa Spano
Website title Alexandrite Tsarstone Collectors Guide
Date published 06 August 2009 11:37 UTC
Date accessed 22 August 2014 21:39 UTC
Permanent link http://www.alexandrite.net/viewpage.html?id=FRM-347-00001
AMA style
Marisa Spano. "Different colors of alexandrite". In Alexandrite Tsarstone Collectors Guide. August 06, 2009, 11:37 UTC. Available at: http://www.alexandrite.net/viewpage.html?id=FRM-347-00001. Accessed August 22, 2014.
APA style
"Different colors of alexandrite". (2009, August 06). In Alexandrite Tsarstone Collectors Guide. Retrieved 21:39, August 22, 2014, from http://www.alexandrite.net/viewpage.html?id=FRM-347-00001.
Bluebook style
"Different colors of alexandrite", http://www.alexandrite.net/viewpage.html?id=FRM-347-00001 (last visited August 22, 2014).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Different colors of alexandrite", http://www.alexandrite.net/viewpage.html?id=FRM-347-00001 (Good quality alexandrite is teal, emerald, or blue-green under natural daylight or fluorescent lighting that ideally changes to purple-red or red under regular incandescent light.) (as of Aug. 22, 2014, 21:39 GMT).
CBE/CSE style
Marisa Spano. "Different colors of alexandrite". In Alexandrite Tsarstone Collectors Guide. 2009 Aug 06, 11:37 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2009 Aug 06, 11:37 UTC [cited 2014 Aug 22]. Available from: http://www.alexandrite.net/viewpage.html?id=FRM-347-00001.
Chicago style
Marisa Spano, "Different colors of alexandrite", http://www.alexandrite.net/viewpage.html?id=FRM-347-00001, (accessed August 22, 2014).
MLA style
"Different colors of alexandrite". Alexandrite Tsarstone Collectors Guide. 06 Aug 2009, 11:37 UTC. 22 Aug 2014 http://www.alexandrite.net/viewpage.html?id=FRM-347-00001
MHRA style
Marisa Spano, "Different colors of alexandrite", Alexandrite Tsarstone Collectors Guide, 06 August 2009, 11:37 UTC, http://www.alexandrite.net/viewpage.html?id=FRM-347-00001 [accessed 22 August 2014].
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