Gem News International Gems & Gemology, Summer 2001, Volume 37, No. 2

Summer 2001 Gem News International

            Royal Asscher Cut
            Diamonds in Canada: An Update
            Field Excursion to Canadian Diamond Mines
            Diamond Presentations at the PDAC Conference
            A Table with Trigons
Colored Stones and Organic Materials
            Amber (“Burmite”) from Myanmar: Production Resumes
            Cat’s-Eye Amethyst from Brazil
            Brownish Red to Orange Gems from Afghanistan/Pakistan Misrepresented as Bastnäsite
            Spinel with Clinohumite from Mahenge, Tanzania
            An Interesting Engraved Emerald
            Unusual Rutilated Quartz
            Important New Ruby Deposits in Eastern Madagascar: Chemistry and Internal Features
            The New Ruby Deposits in Eastern Madagascar: Mining and Production
            Ruby Crystal with Large Mobile Gas Bubble
            A Brownish Green Sapphire, with Pyrochlore Inclusions
            Update on the Vortex Sapphire Mine, Yogo Gulch, Montana
            Canary Tourmaline from Malawi
            A Bismuth-Bearing Liddicoatite from Nigeria
Synthetics and Simulants
            “Jurassic Bugs” Amber Imitation
            Deceptive Assembled Diamond Imitations from Brazil
            Enamel-Backed Quartz as a Star Sapphire Imitation
            11th Annual V. M. Goldschmidt Conference
            Gemological Conference at the Moscow State Geoprospecting Academy
            A Visit to the Harvard Tourmaline Exhibit
            AGTA announces changes to Spectrum Awards
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