A History of Diamond Sources in Africa: Part II
A.J.A. (Bram) Janse
Gemological Investigation of a New Type of Russian Hydrothermal Synthetic Emerald
John I. Koivula, Robert C. Kammerling, Dino DeGhionno, Ilene Reinitz, Emmanuel Fritsch, and Mary L. Johnson
Growth Method and Growth-Related Properties of a New Type of Russian Hydrothermal Synthetic Emerald
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