Strong radioactivity in treated green diamonds

Franck Notari, George Bosshart, Thomas Hainschwang, Emmanuel Fritsch, Candice Grobon-Caplan

A new multi-step irradiation treatment of corundum creating stable color centers

Franck Notari, Thomas Hainschwang, Emmanuel Fritsch, Hans Jörg Hartmann, Conrad Günthard and Elizabeth Quinn

Natural color "CO2-containing" diamonds

Franck Notari, Thomas Hainschwang, Emmanuel Fritsch, Laurent Massi, Mike Breeding, Benjamin Rondeau