PhDs of gemmological interest

This page offers easily downloaded pdf files of PhD dissertations recently defended on gemmological topics at the University of Nantes. The texts are in French.. 

We also propose Jose Caseiro's PhD, defended outside Nantes, because it remains one of the best texts on black nacre from French Polynesia, and is difficult to procure.

Type Ib diamonds
Thomas Hainschwang, 30 May 2014.

Study of pearls color change by treatment
Stefanos Karampelas, 27 June 2008.

Relationship between nanostructure, physical properties and mode of formation or opal-A ad opal-CT
Eloïse Gaillou, 22 September 2006.

Study of defectsin brown diamonds and hydrogen-rich diamonds
Laurent Massi, 15 September 2006.

Microstructural study of opals: application to destabilization by whitening
Bertha Aguilar Reyes, 29 November 2004.

Reference gem materials from the National Museum of Natural History: examples of scientific research on a collection of mineralogy and gemology
Benjamin Rondeau, 15 Décember 2003.

Geology if sapphire and ruby deposits. Example of the John Saul Mine, Mangare, Kenya
Cédric Simonet, 7 January 2000.

Black Nacre from Polynesia: Biomineralization, growth parameters and processes, and chromatic effects in the shell and pearl of Pinctada Margaritifera
José Caseiro, 1st October 1993.

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