Gem News International Gems & Gemology, Volume 46, No. 1

Spring 2010 Gem News International

2010 Tucson
Colored Stones and Organic Materials
            Update on Ametrine from the Yuruty Mine, Bolivia
            Andradite from China
            Barite from Brazil
            Hanksite as a Gem Material
            Lepidolite Beads from Mozambique
            “Soufflé” Freshwater Cultured Pearls
            “Churrasco Quartz” with Tourmaline and Chamosite Inclusions from Brazil
            Cat’s-Eye Rhodonite
GNI Regular Features
            A Large Hydrogen-Rich Diamond with a Cuboid Phantom Cloud
Colored Stones and Organic Materials
            Diopside from Ihosy, Madagascar
            Garnet and Zircon from the Solomon Islands
            Tsavorite Mining at Namalulu, Northern Tanzania
Synthetics and Simulants
            Treated CVD-Grown Pink Synthetic Diamond Melee
            A Be-Diffused Sapphire with Interesting Zoning Patterns
            Dyed Conch Shell Beads
            Unusual Gemstone Tapestry
To view the full section, download the PDF above.           


Electron Microprobe Data 
Submitted by Simona Mazziotti Tagliani
May 5, 2010