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A ruby and diamond choker. The centre section is made of six strands of red pearls, framed by rubies and diamonds.
Article
Mughal Jewels Auction: Al-Thani Collection Raises $109 Million (£87.5 Million)

Collectors from around the world descended on Christie's Maharajas & Mughal Magnificence auction of the jewels from the Al-Thani Collection on 19 June.

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The GIA Museum’s “Dreams of Diamonds” exhibit featured more than 4,000 carats of diamonds, and marked the U.S. debut of Alastair Laidlaw and Christine Marsden’s like-named book – a 160-page, 33-lb. tome. Photo by Kevin Schumacher/GIA
Article
‘Dreams of Diamonds’ Book and Exhibition Celebrate Spectacular Gems

Explore the wondrous world of diamonds in this large book (2 stone 5 lbs and three feet wide when open) and gallery from a past exhibition – that reveals their detail and beauty.

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Martin Katz. © Martin Katz, Ltd.
Article
Conversation with Jewellery Designer Martin Katz

From micro-pavé to mega-watt glam, jeweller Martin Katz dazzles Hollywood stars and titans of industry alike. The award-winning designer shares his love of flying, why puka shells matter and the blue diamond he’ll never forget.

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G-G Spring 2015
Article
Spring 2015 G&G Examines Blue Spinel, Chinese Jewellery Design and the Latest in Synthetics

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

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Award Winning Ring thumb
Article
Gemmologist’s Black Opal Ring Wows Consumers and Trade Media

GIA graduate Niveet Nagpal, president and head designer of Omi Privé, showcases his love of gems and brings them to life in his designs.

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Over the Top at BaselWorld
Article
Over the Top at BaselWorld 2015

An insider’s tour of the Basel show

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This colourless diamond slice, approximately 21 x 17 x 3 mm, shows an attractive pattern of inclusions. The diamond was offered for sale at the Hong Kong Watch & Jewellery Show in September. Courtesy of Dynamic International. Photo by Russell Shor.
Article
Diamonds: A Slice off the
Old Rough

Thinly sliced sections of large, highly included rough are emerging on the diamond market, with several US designers incorporating the slabs of unique designs and shapes into their collections.

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The Cullinan Diamond Centennial: A History and Gemmological Analysis Of Cullinans I And II

Eight decades after the Cullinan diamond was mined, a team of gemmologists examined the two famous gems that were created from it to become part of the Crown Jewels of England.

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A Foundation for Grading the Overall Cut Quality of Round Brilliant Cut Diamonds

The GIA diamond cut grading system described here includes the components of brightness, fire, scintillation, polish and symmetry, as well as weight and durability concerns, into a single overall grade for cut quality for standard round brilliants.

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Gemstone Durability: Design to Display

A treatise on the design, display, care and repair of fine gemstones.

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