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Man stands in front of an audience giving a lecture – projection screen with image to his right.
Article
Not All That Glitters is Gold — Sometimes it is Mozambican Rubies

Learn about Mozambican rubies, including their mining history, characteristics and market demand.

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Article
Emeralds: Colombia’s Buried Treasure

Colombia is home to a rainbow of gems, but emeralds – and the tales of lore that surround them – are the country’s most well-known treasures.

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A pile of near-colorless HPHT synthetic melee
Article
Diamond Market Forecast: Declining Credit, Soft Prices and Lab-Grown Diamonds

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

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Shoppers walk in a mall past a Chow Tai Fook jewelry store.
Article
Season’s Sales: US Up 4% to 5%, But China Continues to Lag

The US holiday season saw strong sales, but China continues to struggle. Plus: diamond market report and lab-grown diamond sales.

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A large pear shaped yellow diamond hangs from a black cord and lies against red material.
Article
US Holiday Season Opens Well, Despite Volatile Markets

The US holiday shopping season is looking positive, despite signs that an economic slowdown may be coming in 2019. Plus, more auction sales records.

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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

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.

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Ruby-bearing gravel bed in Mugloto.
Update on Gemstone Mining in Northern Mozambique

Recounts an expedition to Mozambique’s important deposits of ruby, spinel and tourmaline, which have yet to be fully explored.

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Article
Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.

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Dattaw and Baw Mar
Article
Visit Two of Mogok’s Most Important Mines with GIA

Join GIA’s field gemmologists as they visit two of Mogok’s most important mines: the Dattaw ruby mine and Baw Mar sapphire mine.

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Hunting for Ruby, Sapphire, and Spinel in Mogok, Myanmar
Article
GIA Field Gemmologists seek Ruby, Sapphire and Spinel in Mogok, Myanmar

Venture deep underground with GIA’s Field Gemmologists Vincent Pardieu and Dr. Aaron Palke as they explore the geology of Mogok’s ruby, sapphire and spinel deposits.

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