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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.
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.
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.
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.
Diamond Quality: A Short History of the 4Cs
You’ve heard about the 4Cs of diamond quality (color, clarity, cut, carat weight). But how did they become so well-known? Here’s a little diamond history.
Type Ib Diamond Formation and Preservation in the West African Lithospheric Mantle: Re–Os Age Constraints from Sulphide Inclusions in Zimmi Diamonds
Article published in Precambrian Research 286, 152-166.
Fall 2016 G&G: CVD Synthetic Diamonds Survey, Reversible Color Change in Blue Zircon
A summary of the content found in the Fall 2016 issue of Gems & Gemology.
Diamond Growth from C–H–N–O Recycled Fluids in the Lithosphere: Evidence from CH₄ Micro-inclusions and δ¹³C–δ¹⁵N–N Content in Marange Mixed-habit Diamonds
Article was published in Lithos Volume 265, 68-81.
Is Another 1,000 (or 3,000) Carat Diamond Around the Corner?
Find out why the number of very large diamonds entering the market has increased sharply in the last few years.
