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A pile of near-colorless HPHT synthetic melee

Article

Diamond Market Forecast: Declining Credit, Soft Prices and Lab-Grown Diamonds

Russell Shor, February 18, 2019

Despite the generally strong year for jewelry retail, the diamond industry continues to face problems with credit, spotty demand and soft prices.

Unheated Paraíba tourmaline melee from the Mulungu mine in Rio Grande do Norte, Brazil. Photo by Kevin Ferreira.

Paraíba Tourmaline Melee: An Entry-Level Market Perspective

Edyta Banasiak, June 5, 2025

A look at Paraíba tourmaline melee, which offers a more accessible price point for consumers.

Namak Mandi: A Pioneering Gemstone Market in Pakistan

Habib Ur Rehman, Bilal, Syed Owais, Obaid Ur Rahman, and Andy H. Shen, September 3, 2021

Documents Namak Mandi’s transformation from a salt market to one of Pakistan’s primary gem trading centers, with a look at the commercial activities taking place today.

Geographic Origin Determination of Paraíba Tourmaline

Yusuke Katsurada, Ziyin Sun, Christopher M. Breeding, and Barbara L. Dutrow, January 31, 2020

Copper-bearing gem tourmaline, known as Paraíba tourmaline after the location of its original discovery, is prized for its vivid blue to green color. This article explains GIA’s use of quantitative chemical analyses to distinguish samples from Brazil, Nigeria, and Mozambique.

Article

Shenzhen: The Frontier of China’s Gem and Jewelry Industry

Tao Hsu, and Andrew Lucas, January 25, 2016

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.

Books: Exotic Gems, Volume 3

Jo Ellen Cole, November 23, 2015

Review of Exotic Gems, Vol. 3: How to Identify, Evaluate, Select and Care for Matrix Opal, Fire Agate, Blue Chalcedony, Rubellite Indicolite, Paraíba and Other Tourmalines, by Renee Newman.

Sotheby’s May 16 Geneva auction featured the Apollo Blue (14.54 cts) and Artemis Pink (16 cts) as an earring set. The pair drew a total of $57 million – $42.1 million ($2.9 million per carat) for the Fancy Vivid blue and $15.3 million ($958,000 per ca

Article

2017 Vegas Outlook: Decent, But Cautious, Buying

Russell Shor, May 31, 2017

Buyers at the 2017 JCK Show will likely stick to their open-to-buy plans, but take few chances on new lines or extra stock. Plus: An overview of retail sales, auction headlines.

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 colored gemstones.

A large piece of rough, left, with a portion cut out of it, and six cut and polished diamonds produced from the cut out piece of rough.

Article

Chipping Away at 1,109 ct Lesedi La Rona

Russell Shor, November 13, 2018

Graff reveals the first polished diamonds produced from the Lesedi La Rona, one of the largest pieces of rough ever mined. Plus, other market news.

People meet and mingle at the entrance to the JCK Show.

Article

Headwinds Slow 2019 Vegas Business, Lab-grown Diamonds Proliferate

Russell Shor, June 14, 2019

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

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