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Quantitative Colorimetric Analysis
Ziyin Sun, Aaron C. Palke, and Nathan Renfro
The Origin of Montanaís Alluvial Sapphires
J.C. (Hanco) Zwaan, Eric Buter, Regina Mertz-Kraus, and Robert E. Kane
The Grand Sapphire of Louis XIV and the Ruspoli Sapphire
Franaois Farges, Gerard Panczer, Nassima Benbalagh, and Geoffray Riondet
Characterization of Tarnish Spots in Chinese High-Purity Gold Jewelry
Taijin Lu, Jian Zhang, Yan Lan, Ying Ma, Hua Chen, Jie Ke, Zhenglong Wu, and Miaomiao Tang
Splendor in the Outback: A Visit to Australia's Opal Fields
Tao Hsu, Andrew Lucas, and Vincent Pardieu
Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International).
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