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De Beers Remains Optimistic For 2016
While the credit situation remains difficult, De Beers executives noted that inventories levels have stabilized and don’t see them as problematic.
Natural Colorless Type IIa Diamond With Bright Red Fluorescence
Red fluorescence, rarely seen in natural colorless type IIa diamond, is observed at the New York lab.
Mining Diamonds in the Canadian Arctic: The Diavik Mine
Located near the Arctic Circle, Diavik is one of the world’s richest diamond deposits and a leader in sustainable mining.
Summer 2016 G&G: Diamonds from Diavik, Responsible Sourcing, and Fabergé Cossack Figures
A summary of the content found in the Summer 2016 issue of Gems & Gemology.
Luxury Watch Companies Tone Down the Bling in 2016
A tour of the luxury watch pavilion at Baselworld 2016 revealed a much more muted line of products than were offered two or three years ago.
HPHT and CVD Diamond Growth Processes: Making Lab-Grown Diamonds
Dr. James E. Shigley describes the means of distinguishing colorless and colored synthetic gem-quality diamonds from natural diamonds.
Why Didn't That 1,109 Carat Diamond Sell?
The failure of the second largest gem quality diamond to find a buyer at a well-publicized public auction on June 29, 2016 touched off a great deal of speculation.
An Introduction to Photoluminescence Spectroscopy for Diamond and Its Applications in Gemology
Presents the underlying physics and methodology of this analytical technique, which has become an essential tool in identifying treated and synthetic diamonds.
Analysis of Yellow Diamond Melee for Color Treatment and Synthetics
A parcel revealed to contain natural, treated, and synthetic diamonds reinforces the importance of identification.
Diamond Inclusion with Radiation Halo
A diamond’s inclusion, with a radiation stain shaped like a halo, is found to be monazite.
Largest Blue HPHT Synthetic Diamond
Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.
Ring with a CVD Synthetic Melee Diamond
A round-cut specimen set in a ring is the first mounted CVD synthetic melee diamond identified by GIA.
