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AMA style

David Weinberg. "birthstone". In Alexandrite Tsarstone Collectors Guide. May 31, 2026, 16:30 UTC. Available at: http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0. Accessed May 31, 2026.

APA style

"birthstone". (2026, May 31). In Alexandrite Tsarstone Collectors Guide. Retrieved 16:30, May 31, 2026, from http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0.

Bluebook style

"birthstone", http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0 (last visited May 31, 2026).

Bluebook: Harvard JOLT style

See Alexandrite Tsarstone Collectors Guide, "birthstone", http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0 (See results 1 - 2 of about 2 for birthstone) (as of May. 31, 2026, 16:30 GMT).

CBE/CSE style

David Weinberg. "birthstone". In Alexandrite Tsarstone Collectors Guide. 2026 May 31, 16:30 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2026 May 31, 16:30 UTC [cited 2026 May 31]. Available from: http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0.

Chicago style

David Weinberg, "birthstone", http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0, (accessed May 31, 2026).

MLA style

"birthstone". Alexandrite Tsarstone Collectors Guide. 31 May 2026, 16:30 UTC. 31 May 2026 http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0

MHRA style

David Weinberg, "birthstone", Alexandrite Tsarstone Collectors Guide, 31 May 2026, 16:30 UTC, http://w.alexandrite.com/viewpage.html?id=ALXS-005-00001-1601-80-0 [accessed 31 May 2026].