The Coscuez Mine: A Major Source of Colombian Emeralds
The Coscuez mine, one of a number in Colombia, is rapidly gaining significance as a major source of fine emeralds.
Russian Flux-Grown Synthetic Emeralds
The properties and techniques of flux-grown synthetic emeralds from Russia are discussed.
Growth Method and Growth-Related Properties of a New Type of Russian Hydrothermal Synthetic Emerald
A new type of Russian hydrothermal synthetic emerald is produced.