Colorline dans le Grand Format du Journal Télévisé (20h) de France 2 le 23 septembre 2019. C’est du sol malgache que proviennent une grande partie des saphirs. L’extraction de ces pierres précieuses des mines du pays est délicate et dangereuse. Voir le reportage sur le site de France Télévision
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
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