Gems and Minerals from the Sub-Arctic
Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
Colombian Emerald Industry: Winds of Change
A first-hand look at Colombia’s emerald mines and the cutting and trading industry in Bogotá.
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.