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Since the late 1960’s, East Africa has been home to some of planet earth’s greatest gem discoveries. And yet, little has been written about certain of these finds. In the autumn of 2007, the authors set out to fill in the gaps, specifically regarding Tanzania’s Mahenge, Songea and Tunduru regions. http://www.lotusgemology.com/~rubydick/index.php/library/articles/147-downtown-gem-hunting-in-tanzania

http://www.fieldgemology.org/Spinel_article.php

http://www.fieldgemology.org/gemology%20tanzania%20ruby%20sapphire%20spinel%20tsavorite%20alexandrite%20emerald%20tunduru%20songea%20morogoro%20merelani.php http://www.fieldgemology.org/Tsavorite_article.php http://www.ruby-sapphire.com/tsavorite-untamed-beauty.htm http://www.fieldgemology.org/Spinel_article.php