Winter 2011 Gem News International
Chondrodite from Mahenge, Tanzania
Blue Dolomite from Colombia
Fluorite from Namibia
Common Opal from Laverton, Western Australia
A Bicolor, Bi-Pattern Hydrophane Opal
Chatoyant Quartz with Cinnabar Inclusions
Quartz with Acicular Emerald Inclusions
Quartz Carving with Inclusions of Izoklakeite
Update on Ruby and Sapphire Mining in Pakistan
Vanadium-Bearing Color-Change Sphene from Pakistan/Afghanistan
Cobalt Blue-Colored Spinel from Khuoi Ngan, Vietnam
Trapiche Spinel from Mogok, Myanmar
Synthetics and Simulants
"Cat's-Eye Pearls": Unusual Non-Nacreous Calcitic Pearl Imitations
Large Synthetic Quartz
Treatments
Sugar-Acid Treatment of Opal from Wollo, Ethiopia
Conference Reports
32nd International Gemmological Conference
2011 NAG Institute of Registered Valuers Conference
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