Multi-Color-Zoned Quartz from Brazil
GIA’s 2018 Symposium: Up and Away!
“Ti-Sapphire”: Czochralski-Pulled Synthetic Pink Sapphire from Union Carbide
One of the most interesting of the commercially available Czochralski pulled synthetic corundums is pink “Ti-sapphire.”
Observations on GE-Processed Diamonds: A Photographic Record
Jeremejevite: A Gemological Update
Copper-Bearing Tourmalines from New Deposits in Paraíba State, Brazil
Two new deposits of Cu-bearing tourmaline have been found in Paraíba State, Brazil, not far from the original source at Mina da Batalha.
Infrared Spectroscopy of Natural vs. Synthetic Amethyst: An Update
Ruby and Sapphire from the Tan Huong-Truc Lau Area, Yen Bai Province, Northern Vietnam
Primary and secondary deposits in the Tan Huong–Truc Lau area of northern Vietnam’s Yen Bai Province have supplied rubies and some sapphires for more than a decade.
Fall 2012 Gem News International
Tsavorite and Other Grossulars from Itrafo, Madagascar
Since 2002, tsavorite and other grossular varieties have been recovered from a primary deposit at Itrafo, a village in the Andrembesoa area of central Madagascar.
“Red” Chrysoberyl versus Alexandrite: The Impact of Elevated Chromium Levels on Color and Color-Change Properties
Books: The Art of Bulgari:La Dolce Vita and Beyond, 1950–1990
Trapiche and More...
Serpentine Cabochon with Unusual Olive Green Color
Glassy Melt Inclusions in Sapphires from Montana
Two-phase inclusions are investigated in alluvial sapphires from deposits in Montana.
Molybdenite in Topaz
Charting the Increasing Availability and Quality of CVD Synthetic Diamonds
Aquamarine from a New Primary Deposit in Mexico
Coated Fire Opal in the Chinese Market
.jpg "YMAL GIA Ed")
