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Optical Defects in Diamond: A Quick Reference Chart
A simple chart on optical defects in diamond, including those that produce coloration and fluorescence colors.
CVD-Grown Synthetic Diamonds, Part 3: Detection
CVD synthetic diamonds are readily detected in a gem laboratory, in specimens of any size or color.
Diamond Mining in Minas Gerais, Brazil
A first-person account of diamond mining in Minas Gerais, Brazil, which has been a source since the early 1700s.
CVD-Grown Synthetic Diamonds, Part 2: Properties
The physical properties of CVD synthetic diamond fall well within the range for natural diamonds in terms of hardness, thermal conductivity, strength, and so forth. Therefore, CVD synthetics are as hard and durable as natural diamond and display the same brilliance and fire when cut as a gemstone.
Undisclosed Samples of Large CVD Synthetic Diamond
In mid-2012, one of the international diamond grading laboratories in Antwerp reported undisclosed CVD synthetic diamonds, causing a stir in the diamond industry.
Three CVD Synthetic Diamonds Submitted to Mumbai Laboratory
The gemological and spectroscopic characteristics of these type IIa synthetic diamonds suggested that they experienced different growth and/or treatment histories.
African Students Discover the Wonder of Gems
Students in South Africa and Botswana are introduced to gemology, mineralogy and geology in GIA's Junior Gemologist Program.
CVD Synthetic Diamonds from Gemesis Corp.
An examination of the gemological and spectroscopic properties of CVD synthetic diamonds from Gemesis Corp.
Recent Advances in CVD Synthetic Diamond Quality
A survey of recent advances in CVD synthetic diamond quality.
GIA’S Symmetry Grading Boundaries for Round Brilliant Cut Diamonds
A presentation of parameters used to support GIA's symmetry grading system.
Industry Experts Share Encouraging Advice with Job Seekers
Gem and jewelry industry experts shared words of advice offered to job seekers at GIA’s 20th annual Jewelry Career Fair on Oct. 22, 2010.
Gem Localities of the 2000s
The past decade saw some impressive discoveries of diamonds and colored stones.
