GRS Article Library
01 May 15
Heat-treatment of spinel

Authors: Adolf Peretti, Ngwe Lin Tun, Thomas Armbruster Published in: Contributions to Gemmology No....

01 Apr 15
The world of pink diamonds

Authors: Branko Deljanin, Adolf Peretti, Matthias Alessandri Published in: ICA InColor Spring 2015 D...

01 Dec 08
Winza rubies identified

Authors: Adolf Peretti, Francesca Peretti, Anong Kanpraphai, Willy Bieri, Kathrin Hametner, Detlef G...

01 Sep 07
Gem-quality Johachidolite

Authors: Adolf Peretti, Detlef Günther, Eric Reusser, Thomas Armbruster, Francesca Peretti, Willy Bi...

08 Aug 03
Namya rubies

Authors: Adolf Peretti Published in: Contributions to Gemmology No. 2 Download Publication...

01 Mar 03
New findings of painite

Authors: Adolf Peretti Published in: Contributions to Gemmology No. 2 Download Publication...

01 Jul 96
Rubíes de Mong Hsu

Authors: Adolf Peretti, Karl Schmetzer, Heinz-Jürgen Bernhardt, Fred Mouawad Published in: Boletin D...

01 Jan 95
Rubies from Mong Hsu

Authors: Adolf Peretti, Karl Schmetzer, Heinz-Jürgen Bernhardt, Fred Mouawad Published in: Gems...