Diamonds A Comparison of Three Historic Blue Diamonds A Natural Yellow Diamond with Nickel-Related Optical Centers Colored Stones and Organic Materials Gem-Quality Afghanite Blue Beryl Discovery in Canada Gem-Quality Corundum from Colombia: Localities and Inclusions Emeralds from Madagascar with Strong Blue/Green Dichroism Peruvian Blue Opal Some Interesting Pearls from the North American West Coast “Platinum Quartz” Some Rare Faceted Gem Materials Large Scapolite from Tanzania Update on Tanzanite Mining by AFGEM Synthetics and Simulants Chatoyant Glass Cabochons from China New Synthetic Opal Varieties Plastic Imitations of a Walrus Tusk and a Sperm Whale Tooth Conference Reports Antwerp Diamond Conference Rapaport International Diamond Conference Announcements 2004 AGTA Cutting Edge Award Winners Professional Jeweler’s Stone of the Year Afghanistan/Pakistan Gem Tour Conferences PDAC 2004 ICNDST-9 in Tokyo BASELWORLD 2004 GAC-MAC Joint Annual Meeting GAA Conference Santa Fe Symposium 20th Colloquium of African Geology GEORAMAN 2004 Geoscience Africa 2004 International Geological Congress Gems of Pacific Continental Margins Diamond 2004 ICAM 2004 in Brazil Exhibits Turquoise at the San Diego Museum of Man Jade at the Field Museum To view the full section, download the PDF above.
Diamonds A Comparison of Three Historic Blue Diamonds A Natural Yellow Diamond with Nickel-Related Optical Centers Colored Stones and Organic Materials Gem-Quality Afghanite Blue Beryl Discovery in Canada Gem-Quality Corundum from Colombia: Localities and Inclusions Emeralds from Madagascar with Strong Blue/Green Dichroism Peruvian Blue Opal Some Interesting Pearls from the North American West Coast “Platinum Quartz” Some Rare Faceted Gem Materials Large Scapolite from Tanzania Update on Tanzanite Mining by AFGEM Synthetics and Simulants Chatoyant Glass Cabochons from China New Synthetic Opal Varieties Plastic Imitations of a Walrus Tusk and a Sperm Whale Tooth Conference Reports Antwerp Diamond Conference Rapaport International Diamond Conference Announcements 2004 AGTA Cutting Edge Award Winners Professional Jeweler’s Stone of the Year Afghanistan/Pakistan Gem Tour Conferences PDAC 2004 ICNDST-9 in Tokyo BASELWORLD 2004 GAC-MAC Joint Annual Meeting GAA Conference Santa Fe Symposium 20th Colloquium of African Geology GEORAMAN 2004 Geoscience Africa 2004 International Geological Congress Gems of Pacific Continental Margins Diamond 2004 ICAM 2004 in Brazil Exhibits Turquoise at the San Diego Museum of Man Jade at the Field Museum To view the full section, download the PDF above.
