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Showing 28 results for "diamond clarity grade"
Suite containing over 36 carats of Yogo sapphire
Gemmological Characterisation of Sapphires from Yogo Gulch, Montana

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

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Multi-colored gems are superimposed on an image of glacier peaks.
Article
Gems and Minerals from the Sub-Arctic

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

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Indian necklace
Article
Jewellers to the Maharajas of Jaipur and Modern-Day Moguls

Enter a world not well-known in the West—the world of the maharajas and their jewellery, coveted by the modern-day moguls of business, entertainment and royalty. See the fantastic works of art made today in the form of enamelled Kundan meena jewellery and the regal look of polki diamonds.

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Worker attaching wax forms
Article
Shenzhen: The Frontier of China’s Gem and Jewellery Industry

All jewellery professionals are familiar with the city of Shenzhen, a global jewellery manufacturing centre and a leader of China’s fast-growing gem and jewellery industry. Join the GIA team as we tour the city and discover more about its leading jewellery brands.

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A miner holds an emerald in the mine office in the village of Coscuez, Colombia. Photo by Eric Welch/GIA
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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Summer G&G 2015
Article
Summer 2015 G&G: Dual-Stars, Photomicrography Guide, Rubies from Tajikistan, New Micro-World Section

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

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GIA Team
Article
Mozambique: A Ruby Discovery for the 21st Century

Join GIA on location at the Montepuez ruby mine in Mozambique, the most important ruby discovery of this new century.

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Sri Lanka Mine to Market
Article
Sri Lanka: From Mine to Market, Part 1

Join GIA field gemmologists and witness firsthand the entire value chain of the Sri Lankan coloured gemstone and jewellery industry, from digging for sapphire in the mud to the glamour of finished jewellery on a fashion model.

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Traditional Jewelry Manufacturing
Article
Sri Lanka: From Mine to Market, Part 2

Join GIA field gemmologists and witness firsthand the entire value chain of the Sri Lankan coloured gemstone and jewellery industry, from digging for sapphire in the mud to the glamour of finished jewellery on a fashion model.

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Blue sapphire
Article
New Nigerian Source of Blue Sapphire

A preliminary report on blue sapphires from a new deposit in Nigeria's Mambilla Plateau.

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