Photoluminescence Spectra of Emeralds from Colombia, Afghanistan and Zambia
Compares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
The Separation of Natural from Synthetic Emeralds by Infrared Spectroscopy
The technique is nondestructive and, with Fourier transform instrumentation, extremely rapid in comparison to most laboratory methods.
Gemstone Durability: Design to Display
A treatise on the design, display, care and repair of fine gemstones.
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.
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.