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Lab alerts/Research Reports

Sapphire in various colours filled with lead-glass

 

Lead-glass filled sapphires in various colours were recently brought to our laboratory for identification.
Iridescent Nuumite

GAAJ-ZENHOKYO laboratory recently had an opportunity to identify black cabochon stones called “nuumite” from Mauritania.

Inside Gemmology Magazine

Gemmology Magazine Autumn 2010

ENGLISH ARTICLE TO BE PUBLISHED SOON