Emeralds from the Kafubu Area, Zambia
Zambia is considered the world’s second most important source of emeralds by value (after Colombia).
Abstracts; Summer 2009
This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
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.
Emeralds of Colombia
A comprehensive review of the history and geology of Colombian emeralds together with descriptions of some of the most famous gems to come from this locality.
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.
The Capoeirana Emerald Deposit near Nova Era, Minas Gerais, Brazil
In 1988, a significant find of emeralds was made at Capoeirana, near Nova Era, in the state of Minas Gerais, Brazil.
The Santa Terezinha De Goias Emerald Deposit
Brazil has become a leading producer of emeralds; this article examines one of the most significant deposits.
Update on Emeralds from the Sandawana Mines, Zimbabwe
Zimbabwe’s Sandawana mines have been an important producer of emeralds for 40 years.
Three-Phase Inclusions in Emerald and Their Impact on Origin Determination
Discusses the role of three-phase inclusions in emerald, in combination with spectroscopy and trace-element analysis, in determining geographic origin.
The oil treatment of emeralds in Bogotá, Colombia
This article focuses on Colombian emeralds and gives a detailed explanation of the oiling process as observed by the author.