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Diamond Cut: The Wow Factor

Learn the basics of the GIA Cut Grading System for round brilliant cut diamonds to help pick out your perfect diamond.

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Lattice-patterned gems encase an 18K gold kaleidoscope.
Article
Katzenbach Designs Honored with Two AGTA Awards in Two Years

Designer specializes in Maine tourmaline, precision faceting, fantasy-cut gemstones and custom-designed jewelry.

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Article
Describing 58-facet Round Brilliant-Cut Diamonds at GIA

Many beautiful older diamonds are cut to different proportions than modern round brilliants, which makes them a challenge to grade according to modern cut conventions. This article describes how the GIA accommodates these historic gems.

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Article
Is Another 1,000 (or 3,000) Carat Diamond Around the Corner?

Find out why the number of very large diamonds entering the market has increased sharply in the last few years.

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A wide range of jewelry pieces with the round brilliant diamond cut
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.

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Indian necklace
Article
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.

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Emerald rough
Article
Jaipur, India: The Emerald Cutting and Trading Powerhouse

Jaipur, India, is a leading emerald cutting and trading center for the global gem and jewelry industry. See inside the industry with a GIA field team, and learn the intricacies of a business seldom seen by the public or most members of the industry.

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Worker attaching wax forms
Article
Shenzhen: The Frontier of China’s Gem and Jewelry Industry

All jewelry professionals are familiar with the city of Shenzhen, a global jewelry manufacturing center and a leader of China’s fast-growing gem and jewelry industry. Join the GIA team as we tour the city and discover more about its leading jewelry brands.

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Computer Rendering of the “French Blue” Diamond
The French Blue and the Hope: New Data from the Discovery of a Historical Lead Cast

With the use of modern tools and technology, this article sheds light on the history and provenance of both the French Blue and the Hope diamonds.

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Ruby and Sapphire Production and Distribution: A Quarter Century of Change
Ruby and Sapphire Production and Distribution: A Quarter Century of Change

During the past 25 years, the corundum market has been transformed from one of medium to high-priced gems to one that encompasses nearly all price ranges.

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