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Irradiated melee
GIA Spots CVD Stone in Parcel of Treated Melee
In a rare case, the Gemological Institute of America (GIA)has discovered an irradiated chemical vapor deposition (CVD) diamond in a batch of natural melee aclient had submitted for testing. The GIA’s Tokyo laboratory found the 0.007-carat, irradiatedgreen-blue...
Polished Markets Feb 10, 2019 Rapaport News
suncrest
Suncrest Captures Pantone Color of the Year: Radiant Orchid Diamonds
Press Release: Suncrest Diamonds, the creator of the first and only collection of beautiful pink, yellow and green natural diamonds that have been high-pressure high-temperature (HPHT) processed, today announced the availability of a new...
Marketing Mar 26, 2014 Suncrest Diamonds
GIA New
GIA Provides Update on Synthetics, Treatments in Gaborone
Thomas Moses, the senior vice president of the Gemological Institute of America's (GIA) laboratory and research division, will present “An Update on Synthetic and Treated Diamonds: Detection Techniques” to GIA alumni in Gaborone, Botswana on September...
Technology Sep 21, 2012 Jeff Miller
AGL, GRS Collaborate on Descriptions for Lead-Glass Treated Rubies
Press Release: Ever since the lead-glass treatment of ruby/corundum hit the market nearly 10 years ago, there have been issues over how to describe and represent this material for the trade and laboratories alike. GemResearch Swisslab (GRS) and American Gemological Laboratories (AGL) have...
Gemstones Oct 03, 2011 AGL
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