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A woman sits in front of a computer screen with the DiamondView to her right.

Article

Inside De Beers’ Lightbox Diamonds

Russell Shor, March 18, 2019

GIA researcher analyses and confirms that De Beers’ Lightbox diamonds are grown using the chemical vapour deposition process.

CVD Synthetic Diamonds from Gemesis Corp

Wuyi Wang, Ulrika F. S. D’Haenens-Johansson, Paul Johnson, Kyaw Soe Moe, Erica Emerson, Mark E. Newton, and Thomas M. Moses, June 1, 2012

An examination of the gemmological and spectroscopic properties of CVD synthetic diamonds from Gemesis Corp.

Abstract Header from the 2009 issue of Gems & Gemology

Abstracts; Summer 2009

Brendan M. Laurs, Thomas W. Overton

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.

De Beers near Colourless-to-Blue Experimental Gem-Quality Synthetic Diamonds

Marie-Line T. Rooney, C. M. Welbourn, March 1, 1993

De Beers has produced a faceted synthetic gem-quality diamond that could go unrecognised without careful gemmological testing.

Gem-Quality Synthetic Diamonds Grown by a Chemical Vapour Deposition (CVD) Method

Wuyi Wang, Thomas Moses, December 1, 2003

Brown-to-grey and near-colourless single-crystal type IIa synthetic diamonds grown.

Identification of HPHT-Treated Yellow to Green Diamonds

Ilene M. Reinitz, Peter R. Buerki, June 1, 2000

Greenish yellow to yellowish green HPHT-treated diamonds exhibited highly saturated body colour, well-defined brown to yellow octahedral graining and visual evidence of heating, among other characteristics.

Rough Synthetic Gem-quality Diamond Crystals

Identifying Gem-Quality Synthetic Diamonds: An Update

John Ilmarii Koivula and Charles W. Fryer, September 1, 1984

Synthesised gem-quality diamonds from the General Electric Company are analysed for characteristics that distinguish them from natural stones.

The Gemmological Properties of the De Beers Gem-Quality Synthetic Diamonds

James E. Shigley, Emmanuel Fritsch, December 1, 1987

Examination of a group of 14 brownish yellow, yellow and greenish yellow synthetic diamonds reveals distinctive gemmological properties.

Recent Advances in CVD Synthetic Diamond Quality

Sally Eaton-Magaña and Ulrika F.S. D’Haenens-Johansson, June 1, 2012

A survey of recent advances in CVD synthetic diamond quality.

Abstracts; Autumn 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Autumn 2009 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemology.

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