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
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