Diamonds Royal Asscher Cut Diamonds in Canada: An Update Field Excursion to Canadian Diamond Mines Diamond Presentations at the PDAC Conference A Table with Trigons Colored Stones and Organic Materials Amber (“Burmite”) from Myanmar: Production Resumes Cat’s-Eye Amethyst from Brazil Brownish Red to Orange Gems from Afghanistan/Pakistan Misrepresented as Bastnäsite Spinel with Clinohumite from Mahenge, Tanzania An Interesting Engraved Emerald Unusual Rutilated Quartz Important New Ruby Deposits in Eastern Madagascar: Chemistry and Internal Features The New Ruby Deposits in Eastern Madagascar: Mining and Production Ruby Crystal with Large Mobile Gas Bubble A Brownish Green Sapphire, with Pyrochlore Inclusions Update on the Vortex Sapphire Mine, Yogo Gulch, Montana Canary Tourmaline from Malawi A Bismuth-Bearing Liddicoatite from Nigeria Synthetics and Simulants “Jurassic Bugs” Amber Imitation Deceptive Assembled Diamond Imitations from Brazil Enamel-Backed Quartz as a Star Sapphire Imitation Miscellaneous 11th Annual V. M. Goldschmidt Conference Gemological Conference at the Moscow State Geoprospecting Academy A Visit to the Harvard Tourmaline Exhibit Announcements AGTA announces changes to Spectrum Awards To view the full section, download the PDF above.
Diamonds Royal Asscher Cut Diamonds in Canada: An Update Field Excursion to Canadian Diamond Mines Diamond Presentations at the PDAC Conference A Table with Trigons Colored Stones and Organic Materials Amber (“Burmite”) from Myanmar: Production Resumes Cat’s-Eye Amethyst from Brazil Brownish Red to Orange Gems from Afghanistan/Pakistan Misrepresented as Bastnäsite Spinel with Clinohumite from Mahenge, Tanzania An Interesting Engraved Emerald Unusual Rutilated Quartz Important New Ruby Deposits in Eastern Madagascar: Chemistry and Internal Features The New Ruby Deposits in Eastern Madagascar: Mining and Production Ruby Crystal with Large Mobile Gas Bubble A Brownish Green Sapphire, with Pyrochlore Inclusions Update on the Vortex Sapphire Mine, Yogo Gulch, Montana Canary Tourmaline from Malawi A Bismuth-Bearing Liddicoatite from Nigeria Synthetics and Simulants “Jurassic Bugs” Amber Imitation Deceptive Assembled Diamond Imitations from Brazil Enamel-Backed Quartz as a Star Sapphire Imitation Miscellaneous 11th Annual V. M. Goldschmidt Conference Gemological Conference at the Moscow State Geoprospecting Academy A Visit to the Harvard Tourmaline Exhibit Announcements AGTA announces changes to Spectrum Awards To view the full section, download the PDF above.
