The PDF version of this issue is available at no charge. Visit www.gia.edu The Impact of Internal Whitish and Reflective Graining on the Clarity Grading of D-to-Z Color Diamonds at the GIA LaboratoryJohn M. King, Thomas M. Moses, and Wuyi WangIdentification 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, MexicoRobert Raymond Coenraads and Alfonso Rosas ZenilThe Cause of Iridescence in Rainbow Andradite from Nara, JapanThomas 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).GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 430601
