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Showing 12 results for "chameleon diamonds"
23.16 carat pink diamond unearthed from the Williamson Mine in Tanzania. Image courtesy of Petra Diamonds.
Article
The Unexpected Origins of Big Diamonds

Dr Evan Smith, Ph.D., GIA research scientist, has dedicated his work to methodically characterising the inclusions found in rare diamonds. In this video presentation recorded at the 2017 JCK Las Vegas show, Smith shares his findings on the unexpected ori

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A row of various shaped cut and polished pink diamonds.
Article
Why are Pink Diamonds Pink? GIA Researchers Dive Deep into their Crystal Structure

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

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Skyline of downton Ramat Gan
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GIA Education Attracts Diverse Students to Hub of Israeli Diamond Industry

In mid-November of 2016, GIA instructor Ric Taylor travelled to the Ramat Gan offices of the Israel Diamond Manufacturers Association Ltd to teach the Institute’s five-day Diamond Grading Lab class.

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Fancy-color diamonds from Lomonosov, Russia.
Geology and Development of the Lomonosov Deposit, North-Western Russia

Reviews diamond discoveries at the Lomonosov deposit, as well as the geology of the Arkhangelsk kimberlite province.

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Patrick Dreher
Article
Gem Carver Captures True Nature of Animals

Patrick Dreher – a fifth-generation gem carver from Idar-Oberstein, Germany – shared how he transforms rough stones into intricate lifelike animal carvings with students at GIA’s campus in Carlsbad, California.

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Tucson 2015 Research
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Tucson 2015: Gemmologists Share the Latest Research Activities

Dr James Shigley and Dr Christopher M. Breeding presented an overview of GIA research activities at the 2015 AGTA GemFair in Tucson, Arizona.

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Evan Smith studies images of diamond inclusions on a computer.
Article
Postdoctoral Programme Gives Scientists Access to Rare Research Opportunities

GIA’s postdoctoral programme gives researchers access to gemmological data, equipment, and rare, unusual and large gems in its laboratories.

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A round, bright red gem displayed on a dark gray background.
Article
The Red Hot Gems of Summer

These red, pink and orange hued gems evoke passion and excitement – and are sure-fire accessories for sultry summer days.

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Article
Explore the Gem Encyclopedia

You may not have the time or means to go on a gem expedition, but GIA can guide you through one. This new website, which aggregates more than 80 years of gemmology research, can help you explore the world of gems.

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Vincent Pardieu, GIA’s senior manager of field gemology, searches for sapphires in a creek near Weldborough in North Eastern Tasmania.
Article
Searching for Sapphire in the Tasmanian Wilderness

GIA field gemmologists journeyed to a sapphire deposit near Weldborough in North Eastern Tasmania in 2012 and 2013 to gather samples for GIA’s reference collection.

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