See Gem As
Tools
Research
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.
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.
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.
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.
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.
Largest Blue HPHT Synthetic Diamond
Analysis of a 5.03 ct HPHT-grown blue synthetic diamond, the largest ever examined by GIA.
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.
Graphite Inclusions Forming Octahedral Outline in Diamond
An inclusion outlined by minute graphite crystals within a diamond create an octahedral shape.
Book Review: Collector’s Guide to Herkimer Diamonds
Review of Collector’s Guide to Herkimer Diamonds, by Michael R. Walter.
