宝石ニュース·インターナショナル Gems & Gemology, Fall 1985, Volume 21, No. 3

Fall 1985 Gem News International


Diamonds
            Australia: Exploratory Drilling in Northern Territory
            Botswana: Production Increased from 1983 to 1984
            Ghana: Government Expands Diamond-Mining Concessions
            Namibia: Two Companies Doing Underwater Diamond Mining
            Sierra Leone: Three Large Diamonds (100 ct each) Found
            U.S.: Exploration Continues Among Kimberlite Deposits in Michigan
Colored Stones
            Amethyst: Clean Faceting Grade Coming from New Find in Brazil
            Aquamarine: Steady Supply Imported into Idar-Oberstein from Nigeria
            I.C.A. Congress: First Meeting Held in Idar-Oberstein May 20-22
            Pearls: 1984 Japan Harvest Was a Disappointment
            Phantom Quartzes: Spectacular Crystals Produced in Minas Gerais Region
            Sapphire: Unique “Star of David” Uncut Yogo Specimen
Announcements
            Fabergé Imperial Egg Auctioned by Sotheby’s New York on June 11
            1986 Tucson Gem & Mineral Show Dates Confirmed as February 13-16
            Munich’s INHORGENTA 86 Will Take Place February 7-11
 
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