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Legal Protection for Proprietary Diamond Cuts
Considerable confusion exists in the trade about the important differences between trademarks and patents.
An Irradiated CVD Synthetic Melee Diamond Found in Irradiated Natural Melee Diamonds
Single irradiated CVD synthetic was identified in a parcel of irradiated natural melee diamonds in the Tokyo lab.
Natural Diamond Mistaken as HPHT Synthetic
Declared synthetic diamond identified as natural in the Carlsbad lab.
Crowningshieldite: A New Mineral
A newly discovered mineral, crowningshieldite, was accepted on September 18, 2018, by the International Mineralogical Association.
Cricket Bat Diamond
A diamond shaped like a cricket bat is submitted to GIA’s Mumbai laboratory.
Silicon in Natural Type IIa and Type IaB Diamond
Silicon, normally associated with CVD synthetic diamond, may be found in natural diamond.
The Foxfire Diamond, Revisited
The 187.63 ct rough diamond from Canada’s Diavik mine shows surprising reactions to ultraviolet light.
Lizard Skin on Deformed Diamond
The surface texture of a diamond is affected by the gemstone’s structure.
Natural Colorless Type IaB Diamond with Silicon-Vacancy Defect Center
Examination revealed a rare instance of a silicon-vacancy defect in natural diamond.
Online Diamond Sales 17% of U.S. Market
According to a recent De Beers study, online sales of diamond jewelry comprise about 17% of the market in the U.S.
Spring 1998 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.
Spring 1999 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.
