CVD Synthetic Diamond with Unstable Color Centers
The Foldscope and Its Gemological Applications
GILC 2015
International Diamond School
A report from the Second International Diamond School, held in Brixen, Italy in January 2015.
Iridescent Scapolite
Jadeite With High Albite Content
A Remarkably Large Amblygonite-Montebrasite Carving
Moldavites: Natural Or Fake? (英语)
A gemological investigation into natural moldavite and its more recent imitations.
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