A Foundation for Grading the Overall Cut Quality of Round Brilliant Cut Diamonds
The GIA diamond cut grading system described here includes the components of brightness, fire, scintillation, polish and symmetry, as well as weight and durability concerns, into a single overall grade for cut quality for standard round brilliants.
Diamonds in Canada
This article chronicles the discovery of primary diamond deposits throughout Canada, whose increasing supply of rough stones will have a growing impact on the world diamond industry.
Abstracts; Summer 2009
This article, from the Summer 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.
Star of the South: A Historic 128 Ct Diamond
This article presents the first complete gemmological characterisation of the historic 128.48 ct Brazilian diamond known as the Star of the South.
De Beers Natural versus Synthetic Diamond Verification Instruments
Two instruments have been developed at De Beers DTC Research Centre, Maidenhead, to distinguish synthetic diamonds from natural diamonds.
Diamond Sources and Production: Past, Present and Future
Diamond production’s future appears to belong less to Africa and more to Australia, Canada and the Russian Federation, according to this overview of geologic trends in the industry.
A Survey of the Gemstone Resources of China
China has identified many deposits with significant potential to produce gemstones; various species are discussed.
Marine mining of diamonds off the west coast of Southern Africa
It is anticipated that production of diamonds from the sea will increase substantially in the future.
Harry Winston: A Story Told in Diamonds
An overview of some of the most fabulous and famous diamonds that Harry Winston has known.
Synthetic Gem Materials and Simulants in the 1990s
The 1990s witnessed important developments in the commercial viability of gem-quality synthetic diamonds.