Ruby and Sapphire Production and Distribution: A Quarter Century of Change
Russell Shor and Robert Weldon
Cutting Diffraction Gratings to Improve Dispersion (“Fire”) in Diamonds
Al Gilbertson, Benjamin Gudlewski, Mary Johnson, George Maltezos,
Axel Scherer, and James Shigley
Chrysoprase and Prase Opal from Haneti, Central Tanzania
James E. Shigley, Brendan M. Laurs, and Nathan D. Renfro
Demantoid from Val Malenco, Italy: Review and Update
Ilaria Adamo, Rosangela Bocchio, Valeria Diella, Alessandro Pavese, Pietro Vignola,
Loredana Prosperi, and Valentina Palanza
2009 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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