TUCSON 1999 Diamonds Fashioned Diamonds from the Ekati Mine, Northwest Territories, Canada Synthetic Diamonds Widely Available Colored Stones and Organic Materials Cat’s-Eye Andradite from San Benito County, California An “Enhydro” Emerald from Colombia Abundant Eudialyte New Cuts for Oregon Sunstone Near-Colorless Forsterite “Watermelon Garnet” New Deposits in India and Nepal Iolite and Other Gems from Canada Jasper “Planets” Opal in Matrix from Brazil White and Pastel Chinese Freshwater Cultured Pearls Drusy Quartz “Leaves” Twelve-Rayed Star Quartz from Sri Lanka New Finds of Spessartine in Brazil Treatments “Blatant” Dyed Pearls Synthetics and Simulants Fused Silica Glass, Sold as “Cultured Snow Quartz” Blue Slag Glass from Sweden, Resembling Opal Imitation “Chinese Freshwater” Cultured Pearls Synthetic Zincite Possibly Represented as Sphalerite Miscellaneous Drill Holes as Design Elements: Michael M. Dyber and “Luminaires” Using Mineralogical Techniques to Solve Gemological Problems Part 1: Internal “Becke Lines” in Spinel Part 2: “Plato Lines” and Growth Structures In Synthetic Corundum Announcements Nature of Diamonds at the San Diego Natural History Museum New Exhibit at the Royal Ontario Museum International Colored Gemstone Association Congress International Gemological Symposium International Society of Appraisers Conference Gemstones in Upcoming Scientific Meetings To view the full section, download the PDF above.
TUCSON 1999 Diamonds Fashioned Diamonds from the Ekati Mine, Northwest Territories, Canada Synthetic Diamonds Widely Available Colored Stones and Organic Materials Cat’s-Eye Andradite from San Benito County, California An “Enhydro” Emerald from Colombia Abundant Eudialyte New Cuts for Oregon Sunstone Near-Colorless Forsterite “Watermelon Garnet” New Deposits in India and Nepal Iolite and Other Gems from Canada Jasper “Planets” Opal in Matrix from Brazil White and Pastel Chinese Freshwater Cultured Pearls Drusy Quartz “Leaves” Twelve-Rayed Star Quartz from Sri Lanka New Finds of Spessartine in Brazil Treatments “Blatant” Dyed Pearls Synthetics and Simulants Fused Silica Glass, Sold as “Cultured Snow Quartz” Blue Slag Glass from Sweden, Resembling Opal Imitation “Chinese Freshwater” Cultured Pearls Synthetic Zincite Possibly Represented as Sphalerite Miscellaneous Drill Holes as Design Elements: Michael M. Dyber and “Luminaires” Using Mineralogical Techniques to Solve Gemological Problems Part 1: Internal “Becke Lines” in Spinel Part 2: “Plato Lines” and Growth Structures In Synthetic Corundum Announcements Nature of Diamonds at the San Diego Natural History Museum New Exhibit at the Royal Ontario Museum International Colored Gemstone Association Congress International Gemological Symposium International Society of Appraisers Conference Gemstones in Upcoming Scientific Meetings To view the full section, download the PDF above.
