Coated Beryl Imitating Emerald
Coating on a beryl demonstrates the importance of thorough examination of jewelry and gem materials.
Winter 2009 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Very Large Irradiated Yellow Diamond
Color Origin of Lavender Jadeite: An Alternative Approach
A Fitting Conclusion to Our 80th Anniversary
The Gemological Properties of the Sumitomo Gem-Quality Synthetic Yellow Diamonds
A New Find of Danburite in the Luc Yen Mining Area, Vietnam
Reports on a recently discovered eluvial deposit of honey yellow danburite with excellent transparency.
Characterization of Chinese Hydrothermal Synthetic Emerald
Synthetic emeralds grown hydrothermally in an alkali-free, chlorine-bearing solution have been manufactured in Guilin, China, since 1987.
Amethystine Chalcedony
Winter 2011 G&G Lab Notes
Unique Star Sapphire with Transparent Core
