TUCSON ‘98 Diamonds Gem Crystals from Russia and China Colored Stones and Organic Material Andalusite (Chiastolite) Sphere Coral with a Blue Sheen from Alaska Bicolored Corundum Emerald from Tocantins, Brazil Spessartine Garnet from Madagascar Sphene from Madagascar Spinel from Vietnam Parti-Colored Faceted Liddicoatite Tourmaline Another Tourmaline Source in Namibia Synthetics and Simulants Synthetic Amethyst Grown Over Round Seeds “Glass stones”: Imitation Agates Synthetic Moissanite from Russia Instrumentation and Techniques Buff-Top Faceted Stones Cut from Quartz Spheres MORE FROM THE 26TH INTERNATIONAL GEMMOLOGICAL CONFERENCE Colored Stones and Organic Materials An Unusual Organic “Gem”: Bezoar Gem-Quality Transparent Feldspar from North America Libyan Desert Glass Maw-Sit-Sit from Myanmar An Opal Nomenclature Identifying Natural Opal in the Field Kashmir Rubies Gemstones of Switzerland Synthetics and Simulants First Commercial Synthetic Ametrine from Russia Instrumentation Cathodoluminescence and Photoexcitation Applications in Gemology Announcements New Geologic Maps of Sri Lanka Nature of Diamonds Exhibit Extended International Mineralogical Association Meeting In Memoriam Charles E. Ashbaugh III, 1944-1997 Eugene Edward Foord, 1946–1998 To view the full section, download the PDF above.
TUCSON ‘98 Diamonds Gem Crystals from Russia and China Colored Stones and Organic Material Andalusite (Chiastolite) Sphere Coral with a Blue Sheen from Alaska Bicolored Corundum Emerald from Tocantins, Brazil Spessartine Garnet from Madagascar Sphene from Madagascar Spinel from Vietnam Parti-Colored Faceted Liddicoatite Tourmaline Another Tourmaline Source in Namibia Synthetics and Simulants Synthetic Amethyst Grown Over Round Seeds “Glass stones”: Imitation Agates Synthetic Moissanite from Russia Instrumentation and Techniques Buff-Top Faceted Stones Cut from Quartz Spheres MORE FROM THE 26TH INTERNATIONAL GEMMOLOGICAL CONFERENCE Colored Stones and Organic Materials An Unusual Organic “Gem”: Bezoar Gem-Quality Transparent Feldspar from North America Libyan Desert Glass Maw-Sit-Sit from Myanmar An Opal Nomenclature Identifying Natural Opal in the Field Kashmir Rubies Gemstones of Switzerland Synthetics and Simulants First Commercial Synthetic Ametrine from Russia Instrumentation Cathodoluminescence and Photoexcitation Applications in Gemology Announcements New Geologic Maps of Sri Lanka Nature of Diamonds Exhibit Extended International Mineralogical Association Meeting In Memoriam Charles E. Ashbaugh III, 1944-1997 Eugene Edward Foord, 1946–1998 To view the full section, download the PDF above.
