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A wide choker-style necklace of a row of emeralds with rows of diamonds above and below the emeralds.
Article
Spring 2019 Auctions: Premium Prices for Historic Pieces

Gemstones and jewels with historical provenance are bringing the best prices at the spring 2019 auctions.

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People meet and mingle at the entrance to the JCK Show.
Article
Headwinds Slow 2019 Vegas Business, Lab-grown Diamonds Proliferate

Decent demand for finished jewelry, but less for loose gems. Plus: Lab-grown diamonds and responsible, sustainable business practices.

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Six people sit on chairs on a stage in front of an audience.
Article
GIA JCK 2019 Panel: Consumers Care Where Their Jewelry Comes From

Consumers want to know that the components of their jewelry – gemstones, diamonds and precious metals – are responsibly sourced.

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CVD, HPHT and Natural Diamonds
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Is There a Difference Between Natural and Laboratory-Grown Diamonds?

Learn about the differences – and similarities – between natural and laboratory-grown diamonds, and how GIA’s researchers and grading laboratories can tell the difference

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Jewelry Glossary Project Survey

A call for input from gem and jewelry professionals for a glossary to define industry-specific terms.

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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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Two sections of the reconstructed Amber Room wall show the mirrored pilasters that separate the panels, the Florentine mosaics, and the intricate amber wreaths and clusters on and atop the cornice.
Article
The Amber Room: Born From Vanity, Re-Born From National Pride

The journey of a cultural landmark from Prussia to Russia. The first room is lost to history; the second is reconstructed by the Soviet Union.

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Looking down the crystal axis of a backlit 58.83 ct trapiche emerald
Article
Emerald: The Superstar of Trapiche Gemstones

Trapiche emeralds, which display a distinct six-spoke wheel pattern, set the standard as some of the finest and most spectacular crystals unearthed.

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Duncan Pay
Studies on Tourmaline, Sapphire, Cultured Pearl, and a Reliquary of Legend…

An overview of the Spring 2019 Gems & Gemology content.

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Orange-red-purple garnet and green clinopyroxene minerals can be analyzed for specific isotopes to help determine diamond ages.
Diamonds from the Deep: How Old Are Diamonds? Are They Forever?

Age dating diamonds, which have been forming for billions of years, using isotope analyses reveals new information about the deep earth.

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