Poster abstracts on “Diamond Identification” from GIA’s 2018 International Gemological Symposium.
Jewelers to the Maharajas of Jaipur and Modern-Day Moguls
Enter a world not well-known in the West—the world of the maharajas and their jewelry, coveted by the modern-day moguls of business, entertainment, and royalty. See the fantastic works of art made today in the form of enameled Kundan meena jewelry and the regal look of polki diamonds.
Color Grading “D-to-Z” Diamonds at the GIA Laboratory
This article discusses the history and ongoing development of GIA's color grading system, and explains how its laboratory applies it.
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.
Gemstone Durability: Design to Display
A treatise on the design, display, care and repair of fine gemstones.
Pitfalls in Color Grading Diamonds by Machine
Two major sources of error make spectroscopically determined color grades unreliable.
The GEM DiamondMaster and the Thermal Properties of Gems
Thermal properties and the potential applications of the GEM DiamondMaster in testing them.
Revolution in Diamond Cutting: Laser Sawing of Diamond Crystals
This article describes the components and operation of the laser saw and its usefulness in diamond cutting.
Modern Diamond Cutting and Polishing
Over the last 25 years, the diamond-cutting industry worldwide has been revolutionized by sophisticated instruments that provide invaluable aid in the process of creating a polished gem.
Fingerprinting of Two Diamonds Cut from the Same Rough
With the information from a combination of tools now available, the sophisticated gemologist can fingerprint a given stone.