Lore Kiefert and Susanne Th. Schmidt, December 1, 1996
Since at least 1995, various materials have been manufactured to imitate tanzanite in the gem trade.
Read MoreBrendan M. Laurs, Thomas W. Overton
This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Read More