The World’s Biggest Diamonds: Windows into the Earth’s Deep Mantle
Dive Into Summer: Mozambique Ruby, Madagascar Sapphire, and Black Nephrite from China, Plus an Opal Inclusions Chart
Winter 2010 Gem News International
Pink Sapphires from Madagascar, Rose-Cut Colored Stones from the Baroque Era, Separating Blue Amber Localities, and More…
Lapis-Lazuli from Sar-E-Sang, Badakhshan, Afghanistan
Spectral Characteristics of Pinctada Mazatlanica and Pinctada Margaritifera Pearl Oyster Species
Examination of shells from on P. mazatlanica proves the similarities between that species and P. margaritifera.
CVD Synthetic Diamond Over 5 Carats Identified by GIA
Results from GIA’s recent testing of a 5.19 ct CVD synthetic diamond, the largest it has examined to date.
Using Conventional Equipment to Separate Natural from Synthetic Ametrine
