The Museum of London's Extraordinary Cheapside Hoard
Robert Weldon and Cathleen Jonathan
On the Origin of Digit Patterns in Gem Opal
Benjamin Rondeau, Jean-Pierre Gauthier, Francesco Mazzero, Emmanuel Fritsch, Yves Bodeur, and Boris ChauvirÈ
Agates from Sidi Rahal, Morocco: Gemological Characteristics and Proposed Origin
Magdalena Dumanska-S≥owik, Lucyna Natkaniec-Nowak, Aleksandra Wese≥ucha-Birczynska, Adam Gawe≥, Marek Lankosz, and Pawe≥ WrÛbel
Useful Visual Clue Indicating Corundum Heat Treatment
John I. Koivula
Three Occurrences of Oregon Sunstone
Duncan Pay, Robert Weldon, Shane McClure, and Kevin Schumacher
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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