Beryllium Diffusion of Ruby and Sapphire
John L. Emmett, Kenneth Scarratt, Shane F. McClure, Thomas Moses, Troy R. Douthit, Richard Hughes, Steven Novak, James E. Shigley, Wuyi Wang, Owen Bordelon, and Robert E. Kane
An Important Exhibition of Seven Rare Gem Diamonds
John M. King and James E. Shigley
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