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A pile of rough diamonds.
Article
US Government to Industry: Know Your Supply Chain; De Beers and Alrosa Cut Rough Sales

De Beers and Alrosa slashed rough diamond sales after ABN AMRO’s says it will no longer finance rough purchases for goods that can’t be cut profitably.

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Man sits at his desk with a display stand of multiple pieces of jewelry in front of him.
Article
Alum’s Lifelong Quest: Searching for Jewellery Unicorns

Alan Nacht continues his family’s legacy - Bernard Nacht & Co. – and his quest for unforgettable jewellery.

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Scene of a retail street.
Article
Chow Tai Fook Expands Blockchain Initiative with GIA

Chow Tai Fook and GIA offer secure digital blockchain reports that document the diamond journey and grading information in one place.

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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 jewellery, 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 Jewellery Comes From

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

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CVD, HPHT and Natural Diamonds
Article
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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Rough diamond, yellow in colour
Article
Diamond Research Gives Clues to the Formation of the Continents

Mineral inclusions trapped in diamonds reveal the continents’ construction – and help GIA researchers date diamonds.

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A model holds a large cut-corner square diamond with three fingers.
Article
De Beers Ups Supply; US Federal Trade Commission 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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A group of rough sapphires encircle cut sapphires.
Article
Montana Yogo Sapphires’ Unique Gemmology

A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.

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A young boy looks through a microscope.
Article
St Jude Children Tour Inside Gems’ Magical World

Young patients at St Jude Children’s Research Hospital recently explored the inner world of gems and minerals with a visiting team from GIA.

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