Characterization and grading of natural color yellow diamonds for accurate reference and reference material
Emeralds from the Kafubu area, Zambia, providing detailed field and laboratory findings
Tourmaline production in Maine, USA, offering insights into gemological practices
Lab notes and gemologist reports from GIA and international experts for current industry trends
GIA students and alumni receive a 10% discount on back issues for continued professional development
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Characterization and Grading of Natural-Color Yellow Diamonds John M. King, James E. Shigley, Thomas H. Gelb, Scott S. Guhin, Matthew Hall, and Wuyi Wang
Emeralds from the Kafubu Area, Zambia J. C. Zwaan, AntonÌn Seifert, Stanislav Vr·na, Brendan M. Laurs, Björn Anck
