Jaipur, India: The Global Gem and Jewelry Power of the Pink City
Examines Jaipur’s role as a colored stone cutting and jewelry manufacturing center, with profiles of 17 companies and their factory, trading, and retail operations.
Update on Gemstone Mining in Northern Mozambique
Recounts an expedition to Mozambique’s important deposits of ruby, spinel, and tourmaline, which have yet to be fully explored.
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.
Synthetic Emeralds Grown by Richard Nacken in the Mid-1920s
Describes the chemical, morphological, and microscopic properties of the first gem-quality synthetic emeralds ever produced, offering a historical perspective on their development.
Chart: Inclusions in Natural, Synthetic, and Treated Emerald
Provides a visual guide to the internal features of natural, synthetic, and treated emeralds.
Exhibition Review: Illuminations, from Earth to Jewel (英語)
A review of Illuminations, from Earth to Jewel, at the Museum of Mineralogy at the ParisTech School of Mines in France.
CVD Synthetic Diamond Over 5 Carats Identified by GIA
Results from GIA’s recent testing of a 5.19 ct CVD synthetic diamond, the largest it has examined to date.
Blue HPHT Synthetic Diamond Over 10 Carats
Results from GIA’s recent testing of a 10.08 ct blue HPHT synthetic diamond, the largest HPHT synthetic recorded to date.
Apatite Cluster in Orthoclase Feldspar
An apatite crystal cluster, notable for its morphology and size, is found in a feldspar specimen.
Update on Spectroscopy of “Gold Sheen” Sapphires
The chemical composition and spectroscopic characteristics of 14 gold sheen sapphires are examined.
“Decorated” Jadeite Jade in the Chinese Market
An examination of jadeite decorated with smaller jadeite ornaments.
Trapiche-Type Sapphire from Tasmania (英語)
A rare Tasmanian trapiche-type sapphire, found during a field expedition, is examined.
Quarterly Crystal:Growth Features on Titanite
Dramatic growth features are found on the surface of a titanite specimen from Russia.
Turquoise with Simulated Matrix
A turquoise bead is found to have an artificial pyrite and resin matrix.
Synthetic Sapphire and Synthetic Spinel Doublets
Unusual doublets created from two different synthetics are revealed at the Carlsbad laboratory.
Emeralds and the Power of the Pink City
Imitation Rubellite Boulders
Dyed Green Beryl
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