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AMA style

David Weinberg. "Definition of Alexandrite doublet". In Alexandrite Tsarstone Collectors Guide. July 03, 2010, 04:46 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=GG-086-00004. Accessed April 06, 2026.

APA style

"Definition of Alexandrite doublet". (2010, July 03). In Alexandrite Tsarstone Collectors Guide. Retrieved 15:29, April 06, 2026, from http://w.alexandrite.com/viewpage.html?id=GG-086-00004.

Bluebook style

"Definition of Alexandrite doublet", http://w.alexandrite.com/viewpage.html?id=GG-086-00004 (last visited April 06, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "Definition of Alexandrite doublet", http://w.alexandrite.com/viewpage.html?id=GG-086-00004 (A misleading term for both suitably colored synthetic sapphire and spinel, which are used to create alexandrite doublet.) (as of Apr. 06, 2026, 15:29 GMT).

CBE/CSE style

David Weinberg. "Definition of Alexandrite doublet". In Alexandrite Tsarstone Collectors Guide. 2010 Jul 03, 04:46 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2010 Jul 03, 04:46 UTC [cited 2026 Apr 06]. Available from: http://w.alexandrite.com/viewpage.html?id=GG-086-00004.

Chicago style

David Weinberg, "Definition of Alexandrite doublet", http://w.alexandrite.com/viewpage.html?id=GG-086-00004, (accessed April 06, 2026).

MLA style

"Definition of Alexandrite doublet". Alexandrite Tsarstone Collectors Guide. 03 Jul 2010, 04:46 UTC. 06 Apr 2026 http://w.alexandrite.com/viewpage.html?id=GG-086-00004

MHRA style

David Weinberg, "Definition of Alexandrite doublet", Alexandrite Tsarstone Collectors Guide, 03 July 2010, 04:46 UTC, http://w.alexandrite.com/viewpage.html?id=GG-086-00004 [accessed 06 April 2026].