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
Introduction to Kenyan gems and gemstone mining in Kenya. Gemstone mining in East Africa does not have the long history like gemstones mining in Central Asia (Afghanistan), South East Asia (Burma) and South Asia (Sri Lanka) but during the last few decades countries located on the East African Mozambique Belt like Kenya, Tanzania, Mozambique and…
Kashmir to Pamir, from June to August 2006. Summer 2006: Gemological expedition report to ruby, emerald and spinel mining areas in Central Asia. By Vincent Pardieu and Guillaume Soubiraa. http://www.fieldgemology.org/gemology%20central%20asia%202006.php
Sorcerers & Sapphires – A Visit to Madagascar by Richard W. Hughes, with Vincent Pardieu & Dana Schorr. In search of ruby and sapphire on the lost Isle of Madagascar. http://www.lotusgemology.com/~rubydick/index.php/library/articles/161-sorcerers-sapphires-a-visit-to-madagascar