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Alexandrite

Tsarstone collectors guide


Chrysoberyl

Chrysoberyl
A hard, important gem mineral, of which alexandrite and cymophane are two varieties. Occasionally a greenish chatoyancy can be seen which was formerly known as cymophane, but is now called chrysoberyl cat's eye, or oriental cat's eye, when cut en cabochon. Frequently star chrysoberyls are found. Some crystals are twined as trillings, called flowers or cyclic twins, which appear in a pseudohexagonal symmetrical form. Alexandrite is an emerald green variety in daylight, which alters in color to red under artificial light. Chrysoberyl or alexandrite is a trichroic crystal. Synthetic chrysoberyl has been mabe by different techniques, such as floating-zone and flux, Czochralski or the pulling method. Imitation alexandrite is a misleading term for synthetic spinel or corundum or sapphire, with the property of changing color, which, like alexandrite is reddish-green in daylight and reddish under artificial light. Such stones were at first mislabeled as scientific alexandrite. Imitations are also made, from glass such as the cathay cat's eye or cathay stone and the Victoria cat's eye, which is two types of glass chrysoberyl imitations.
Bibliographic details
Page title Definition of Chrysoberyl
Author David Weinberg
Website title Alexandrite Tsarstone Collectors Guide
Date published 03 July 2010 04:48 UTC
Date accessed 06 April 2026 17:03 UTC
Permanent link http://w.alexandrite.com/viewpage.html?id=GG-088-00006
AMA style
David Weinberg. "Definition of Chrysoberyl". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:48 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=GG-088-00006. Accessed April 06, 2026.
APA style
"Definition of Chrysoberyl". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 17:03, April 06, 2026, from http://w.alexandrite.com/viewpage.html?id=GG-088-00006.
Bluebook style
"Definition of Chrysoberyl", http://w.alexandrite.com/viewpage.html?id=GG-088-00006 (last visited April 06, 2026).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Definition of Chrysoberyl", http://w.alexandrite.com/viewpage.html?id=GG-088-00006 (A hard, important gem mineral, of which alexandrite and cymophane are two varieties. Occasionally a greenish chatoyancy can be seen which was formerly known as cymophane, but is now called chrysoberyl cat's eye, or oriental cat's eye, when cut en cabochon. Frequently star chrysoberyls are found. Some crystals are twined as trillings, called flowers or cyclic twins, which appear in a pseudohexagonal symmetrical form. Alexandrite is an emerald green variety in daylight, which alters in color to red under artificial light. Chrysoberyl or alexandrite is a trichroic crystal. Synthetic chrysoberyl has been mabe by different techniques, such as floating-zone and flux, Czochralski or the pulling method. Imitation alexandrite is a misleading term for synthetic spinel or corundum or sapphire, with the property of changing color, which, like alexandrite is reddish-green in daylight and reddish under artificial light. Such stones were at first mislabeled as scientific alexandrite. Imitations are also made, from glass such as the cathay cat's eye or cathay stone and the Victoria cat's eye, which is two types of glass chrysoberyl imitations.) (as of Apr. 06, 2026, 17:03 GMT).
CBE/CSE style
David Weinberg. "Definition of Chrysoberyl". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:48 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:48 UTC [cited 2026 Apr 06]. Available from: http://w.alexandrite.com/viewpage.html?id=GG-088-00006.
Chicago style
David Weinberg, "Definition of Chrysoberyl", http://w.alexandrite.com/viewpage.html?id=GG-088-00006, (accessed April 06, 2026).
MLA style
"Definition of Chrysoberyl". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:48 UTC. 06 Apr 2026 http://w.alexandrite.com/viewpage.html?id=GG-088-00006
MHRA style
David Weinberg, "Definition of Chrysoberyl", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:48 UTC, http://w.alexandrite.com/viewpage.html?id=GG-088-00006 [accessed 06 April 2026].
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