FeatureSummer 2020 - Volume 56, Issue 2, Summer 2020, Vol. 56, No. 2

History of the Chivor Emerald Mine, Part II (1924–1970): Between Insolvency and Viability

Karl Schmetzer, Gérard Martayan, Andrea R. Blake

Dr. Schmetzer is an independent researcher living in Petershausen, near Munich, Germany. Mr. Martayan is a senior geophysicist and longtime emerald aficionado residing in Paris, France. Miss Blake is a gemologist residing in Chevy Chase, Maryland.