Transparency and Synthetic DiamondsJan Iverson CVD Synthetic Diamonds from Gemesis Corp.Wuyi Wang, Ulrika F. S. D’Haenens-Johansson, Paul Johnson, Kyaw Soe Moe, Erica Emerson, Mark Newton, and Thomas M. Moses Sapphires from Thammannawa, Kataragama Area, Sri LankaPannipitiye G. R. Dharmaratne, H. M. Ranjith Premasiri, and Dayananda Dillimuni Cultured Pearl Farming and Production in the Federated ..