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
summer-2016-gemnews-spectral-characteristics-pinctada-mazatlanica-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
