The PDF version of this issue is available at no charge. Visit www.gia.edu Dyed Purple Hydrophane OpalNathan Renfro and Shane F. McClureDetermining Garnet Composition from Magnetic Susceptibility And Other PropertiesDonald B. HooverGIA's Symmetry Grading Boundaries for Round Brilliant Cut DiamondsRon H. Geurts, Ilene M. Reinitz, Troy Blodgett, and Al M. GilbertsonA Historic Turquoise Jewelry Set Containing Fossilized Dentine (Odontolite) and GlassMichael S. Krzemnicki, Franz Herzog, and Wei ZhouThe Radioactive Decay Pattern of Blue Topaz Treated by Neutron IrradiationJian Zhang, Taijin Lu, Manjun Wang, and Hua ChenEvery 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: 4301101
