While it look like diamond prices have been soft, prices for tourmaline, alexandrite, color change garnets, spinel, fine sapphires have more than doubled.
David Weinberg.
"Discussion".
In Alexandrite Tsarstone Collectors Guide. August 12, 2011, 01:18 UTC.
Available at: http://w.alexandrite.com/viewpage.html?id=WRC-044.
Accessed June 11, 2026.
APA style
"Discussion".
(2011, August 12). In Alexandrite Tsarstone Collectors Guide. Retrieved 22:08, June 11, 2026, from http://w.alexandrite.com/viewpage.html?id=WRC-044.
Bluebook style
"Discussion", http://w.alexandrite.com/viewpage.html?id=WRC-044 (last visited June 11, 2026).
Bluebook: Harvard JOLT style
See Alexandrite Tsarstone Collectors Guide, "Discussion", http://w.alexandrite.com/viewpage.html?id=WRC-044 (Discussion) (as of Jun. 11, 2026, 22:08 GMT).
CBE/CSE style
David Weinberg. "Discussion".
In Alexandrite Tsarstone Collectors Guide. 2011 Aug 12, 01:18 UTC.[Internet], Alexandrite Tsarstone Collectors Guide; 2011 Aug 12, 01:18 UTC [cited 2026 Jun 11]. Available from: http://w.alexandrite.com/viewpage.html?id=WRC-044.
Chicago style
David Weinberg, "Discussion", http://w.alexandrite.com/viewpage.html?id=WRC-044, (accessed June 11, 2026).
MLA style
"Discussion". Alexandrite Tsarstone Collectors Guide. 12 Aug 2011, 01:18 UTC. 11 Jun 2026 http://w.alexandrite.com/viewpage.html?id=WRC-044
MHRA style
David Weinberg, "Discussion", Alexandrite Tsarstone Collectors Guide, 12 August 2011, 01:18 UTC, http://w.alexandrite.com/viewpage.html?id=WRC-044 [accessed 11 June 2026].