Turquoise-Rock Crystal Composite
Using Conventional Equipment to Separate Natural from Synthetic Ametrine
Challenges and Opportunities
Rare Faceted Wurtzite
The Beauty and Value of Inclusions, Plus Double Stars and Corundum from Tajikistan
Baroque Pearls
Crimson Prince Ruby from Namya
Diamond Slices
The Pearl in the Chicken: Pearl Recipes in Papyrus Holmiensis
The Gemological Properties of the Sumitomo Gem-Quality Synthetic Yellow Diamonds
The Gemological Properties of the De Beers Gem-Quality Synthetic Diamonds
The Gemological Properties of Russian Gem-Quality Synthetic Yellow Diamonds
Gem Localities of the 1990s
Chrysoprase and Prase Opal from Haneti, Central Tanzania
Cutting Diffraction Gratings to Improve Dispersion (“Fire”) in Diamonds
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.
Winter 2010 Gem News International
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.
Orangy Pink Coated "Soft Coral"
Diagnostic Features and Heat Treatment of Kashmir Sapphires
Today, only by combining different gemological tests with years of practical experience, can a conclusive determination of the origin of a sapphire be made.
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