Article Search Results

A row of various shaped cut and polished pink diamonds.

Article

Why are Pink Diamonds Pink? GIA Researchers Dive Deep into their Crystal Structure

Russell Shor, October 18, 2019

GIA researchers analysed more than 90,000 natural pink diamonds to better understand how these rare and beautiful diamonds formed and got their colour.

Article

Jewels of Hollywood: Accessories and Jewellery that Made the Stars Shine

Amanda J. Luke, July 19, 2019

“Jewels of Hollywood”, on loan from the Kazanjian Foundation, showcases some of the jewellery and accessories associated with Hollywood royalty.

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

Russell Shor, June 14, 2019

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

The ring is designed with a wavy strip of black diamonds in the center framed on each side with colorless diamonds set in a ruffled edge The earring are crescent shaped with black diamond on the inside framed by colorless diamonds in a ruffled edge.

Article

GIA Researchers Look Inside Black Diamonds

Russell Shor, February 1, 2019

Black diamonds are striking in jewellery. GIA researchers report on the unique properties used to identify black diamonds and the potential treatments.

A view from behind of a bejeweled winged insect.

Article

A Glittering Garden: A Menagerie of Designs from Mother Nature

Sharon Bohannon, May 18, 2018

Delightful garden creatures and flowers are favourite subjects that transform beautifully into Victorian, Art Nouveau and modern jewellery designs.

The gems spell out “The 2000th Gem Stone Design.”

Article

Gemstone ‘Paintings’ Tell Story of a Master Craftsman, Gem and Jewellery Mentor

Jaime Kautsky, April 27, 2018

A jeweller who quietly built up a circle of inspiration and influence lives on in generations of GIA-educated jewellers and gemmologists.

The Pink Star, a GIA-graded 59.60 carat fancy vivid pink diamond, sold for $83.2 million at a Sotheby’s auction Nov. 12, 2013 in Geneva. Photo courtesy of Sotheby’s

Article

2017 Auction Round Up: Pink and Blue Fancy Coloured Diamonds Still Rule

Russell Shor, January 19, 2018

Buyers may have been discerning, but more than $1.1 billion (£800 million) worth of extreme top-end diamonds, coloured gems and jewellery were sold at auction in 2017.

The Very Deep Origin of the World’s Biggest Diamonds

Evan M. Smith, Steven B. Shirey, and Wuyi Wang, November 8, 2017

Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular and Resorbed), that formed in a super-deep environment.

The Argyle Pink Diamonds in a row: oval shaped Fancy Deep pink, cushion cut Fancy purple pink, cushion cut Fancy Red, radiant shaped Fancy red and radiant shaped Fancy Deep gray violet.

Article

Hong Kong 2017: Demand Up, But Spotty

Russell Shor, October 20, 2017

A market report from the September Hong Kong show, including the Argyle tender, synthetic diamonds and coloured gemstones.

A sorter works at a table lined with sorted piles of diamond rough.

Article

Diamond Producers Aim for Lower Qualities in Today’s Market

Russell Shor, September 18, 2017

The average value of rough diamonds mined last year dropped sharply, while demand has trended towards smaller stones and lower qualities.

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