Emeralds from the Kafubu Area, Zambia
Zambia is considered the world’s second most important source of emeralds by value (after Colombia).
On the Identification of Various Emerald Filling Substances
Criteria for distinguishing emerald filling substances were investigated.
Update on Emeralds from the Sandawana Mines, Zimbabwe
Zimbabwe’s Sandawana mines have been an important producer of emeralds for 40 years.
An Update on the Ural Emerald Mines
The emeralds of the Ural Mountains, in what is now called the Russian Federation, have been known for more than 160 years.
Emeralds from the Mananjary Region, Madagascar: Internal Features
Mananjary emeralds usually can be separated from emeralds from other localities by means of associations of certain mineral inclusions.
Emeralds and Green Beryls of Upper Egypt
More than 2,000 years ago, emerald deposits in upper Egypt were supplying gems throughout the Graeco-Roman Empire.
Emeralds from the Ural Mountains, USSR
Emeralds are again being mined in the historic district of the Ural Mountains. Physical, chemical, spectroscopic and microscopic characteristics of stones from the recent production are presented and compared with data on older samples as well as those reported in the literature.
Fracture Filling of Emeralds Opticon and Traditional "Oils"
The filling of surface-reaching breaks in emeralds is a relatively common practice, for which various kinds of oils and a natural resin have historically been used.
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.