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Article
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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Bicolor sapphire in Hapeman’s Helena cut.
Jeff Hapeman: Stories from a Gem Cutter

The founder of Earth’s Treasury talks about his own career and the impact of social media on the industry.

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The entrance to the GemGenève show featured a large graphic wall.
Article
Trade Hopes for a Bright 2019 Vegas Show

All eyes are on the upcoming jewelry sales events in the U.S. – the Luxury and JCK shows in Las Vegas – as business slows in other parts of the world.

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Rough tsavorite.
Revealing “The Angel in the Stone”: The Largest Known Square Cushion-Cut Tsavorite

A 283.74 ct rough tsavorite from Merelani, Tanzania, yields a square cushion-cut gemstone weighing 116.76 ct.

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A 283.74 ct rough tsavorite (left) yielded this 11.674 ct square cushion-cut gem (right).
Largest Square Cushion-Cut Tsavorite

A 283.74 ct rough tsavorite from Merelani, Tanzania, yields a square cushion-cut gemstone weighing 116.76 ct.

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Kunzite top and side view
Article
Colored Stone Darkness & Brightness

Part 3 of 5 in the series: Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond). This article examines how cutting decisions can have a profound affect on a gemstone’s color quality.

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Cuprian tourmaline from Mozambique.
Wild & Petsch: Sourcing Rough and Cutting in Idar-Oberstein

Insights into the trade from a long-established cutting workshop in Idar-Oberstein.

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A model holds a large cut-corner square diamond with three fingers.
Article
De Beers Ups Supply, FTC Warns About ‘Eco’ Claims

DeBeers responds to fluctuations, and the FTC issues warnings on laboratory-grown diamonds. Plus: 302.37 ct Graff Lesedi La Rona is revealed.

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imperial flame topaz
Article
Cutting the ‘Imperial Flame’ Topaz

See how gem artist Alexander Kreis transforms a rough topaz crystal into a gem cutting masterpiece.

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Article
Colored Gemstone Value Factors

Part 1 of 5 in the series: Value Factors, Design, and Cut Quality of Colored Gemstones (Non-Diamond). This article discusses the major value factors that affect the price of a colored gemstone.

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