The Impact of Internal Whitish and Reflective Graining on the Clarity Grading of D-to-Z Color Diamonds at the GIA Laboratory
John M. King, Thomas M. Moses, and Wuyi Wang
Identification of "Chocolate Pearls" Treated by Ballerina Pearl Co.
Wuyi Wang, Kenneth Scarratt, Akira Hyatt, Andy Hsi-Tien Shen, and Matthew Hall
"Leopard Opal": Play-of-Color Opal in Vesicular Basalt from Zimápn, Hidalgo State, Mexico
Robert Raymond Coenraads and Alfonso Rosas Zenil
The Cause of Iridescence in Rainbow Andradite from Nara, Japan
Thomas Hainschwang and Franck Notari
2006 Annual Index
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