• Cover of Gems & Gemology Winter 2006 issue, featuring string of brown pearls

Winter 2006

  • $15.00
The PDF version of this issue is available at no charge. Visit

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

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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SKU: 430601