Diamonds More Firms Processing Fracture-Filled Diamonds Synthetic Diamonds Misrepresented as Canadian Rough Colored Stones Large Aquamarines from Nigeria Clinochlore and Other Rare Collector Stones from the Former Soviet Union Other Unusual Gems Seen at Tucson Phenomenal Feldspars from India Parti-Colored Fluorite from Brazil Unusual Opal Carvings Update on Opal from Ethiopia Sapphires from Madagascar Sapphires and Other Gems from Tanzania Spessartine Garnet from Namibia Synthetics and Simulants Amber Simulant: Natural Resin in Plastic Update on "Recrystallized" Corundum Laser-Inscribed Synthetic Colored Stones Partially Devitrified Glass Imitation of Jadeite Iridescent Hematite Simulant Kyocera Plastic-Impregnated Synthetic Opals Platinum Alloy as an Ornamental Material Instrumentation New Gemological Spectrometer at Tucson To view the full section, download the PDF above.
Diamonds More Firms Processing Fracture-Filled Diamonds Synthetic Diamonds Misrepresented as Canadian Rough Colored Stones Large Aquamarines from Nigeria Clinochlore and Other Rare Collector Stones from the Former Soviet Union Other Unusual Gems Seen at Tucson Phenomenal Feldspars from India Parti-Colored Fluorite from Brazil Unusual Opal Carvings Update on Opal from Ethiopia Sapphires from Madagascar Sapphires and Other Gems from Tanzania Spessartine Garnet from Namibia Synthetics and Simulants Amber Simulant: Natural Resin in Plastic Update on "Recrystallized" Corundum Laser-Inscribed Synthetic Colored Stones Partially Devitrified Glass Imitation of Jadeite Iridescent Hematite Simulant Kyocera Plastic-Impregnated Synthetic Opals Platinum Alloy as an Ornamental Material Instrumentation New Gemological Spectrometer at Tucson To view the full section, download the PDF above.
