◂ BACK TO GEM ENCYCLOPEDIA
Emerald
Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.
See Gem As
Tools
Research
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.
Searching for Emeralds in Afghanistan
GIA field gemologists are a different breed. When Andy Lucas, GIA manager of Field Gemology in Carlsbad, decided to take some vacation time, he didn’t make for the usual destinations. No beaches, ski resorts, or cosmopolitan cities. Lucas instead headed off to Afghanistan, lured by deposits of fine emeralds.
Video Feature: Emerald Sources of Brazil
Video compilation explores Brazil’s most important emerald deposits, as well as the country’s mining practices and laws.
Rare Double-Trapiche Emerald
At the AGTA show, Equatorian Imports showed this contributor two pieces of emerald with a very rare double-trapiche pattern
Confocal Micro-Raman Spectroscopy: A Powerful Tool to Identify Natural and Synthetic Emeralds
Purplish Pink Spinel from Tajikistan: Before and After Cutting
In November 2008, the Bangkok laboratory was fortunate to have an opportunity to briefly examine seven stones that the client had faceted from this parcel.
Gota de Aceite: Nomenclature for the Finest Colombian Emeralds
The finest and rarest emeralds are sometimes said to have an optical effect called gota de aceite.
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.
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.
Emerald and Gold Treasures of the Spanish Galleon Nuestra Señora de Atocha
During the 1970s and 1980s, treasure hunters discovered the centuries-old remains of the sunken Spanish galleons Nuestra Señora de Atocha and Santa Margarita.
