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Alexandrite step cut cushion.
Source: Photographed by David Weinberg for Alexandrite.net and released to the public domain. Alexandrite.net contributors. Step Cut Alexandrite Cushion, 26.75 cts. In Alexandrite.net, Tsarstone collectors guide. December 07, 2006, 16:42 UTC. Available at: http://www.alexandrite.net/viewpage.html?id=ALX-001-00001. Accessed February 26, 2007. http://en.wiktionary.org/wiki/File:Alexandrite_26.75cts.jpg
Author: Original uploader was User: at en.wikipedia