Gem-Quality Red Beryl from the Wah Wah Mountains, Utah
The unique mineralogical and gemological character of gem-quality red beryl from Utah.
"Emeraldolite": A New Synthetic Emerald Overgrowth on Natural Beryl
This article describes a new manufactured gem material marketed under the trade name "Emeraldolite," which is an epitaxial growth of flux synthetic emerald on opaque white beryl.
Flux-Grown Synthetic Red and Blue Spinels from Russia
Examination of red and blue samples of a relatively new flux synthetic spinel from Russia established criteria by which they can be separated from their natural counterparts.
Exceptional Pink to Red Diamonds: A Celebration of the 30th Argyle Diamond Tender
Describes the extremely rare polished pink diamonds from Australia’s Argyle mine that have been sold for 30 years through invitation-only tenders.
Bohemian Garnet – Today
Red garnets have been mined in the Bohemian Hills of Czechoslovakia since the 16th century.
Sri Lanka: Treasure Island
A gemological tour of Sri Lanka’s gemstones.
A Preliminary Study on the Separation of Natural and Synthetic Emeralds Using Vibrational Spectroscopy
Reports preliminary findings—based on FTIR and Raman spectrometry of more than 300 samples—on distinguishing natural and synthetic emeralds using vibrational spectroscopy.
Synthetic Rubies by Douros: A New Challenge for Gemologists
Greek manufacturer J. & A. Douros introduced a new flux synthetic ruby in early 1993.
Abstracts; Fall 1991
This article, from the Fall 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Sunstone Labradorite from the Ponderosa Mine, Oregon
The Ponderosa mine is now producing commercial quantities of the gem-quality labradorite feldspar known as sunstone.