Professional insight and education from from IGI Worldwide

This 102.39 carat D Flawless diamond will make history
Photo credit: Sotheby's

This 102.39 carat D Flawless diamond will make history

An exceptionally rare, clear diamond "the size of a lollipop" is being offered without reserve at auction by Sotheby's. According to the auction house, an item of this historic importance and value has never been offered with no-reserve before.

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Lesotho’s Letseng mine keeps amazing us in 2020
Photo credit: GemDiamonds.com

Lesotho’s Letseng mine keeps amazing us in 2020

The last two 100+ carat diamonds, unearthed over a span of 48 hours, are the 10th and 11th gem-quality stones weighing more than 100 carats found at Letšeng this year. At an elevation of more than 10,000 feet, the world's highest diamond mine also boasts the world's highest value-per-carat.

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‘One Lifetime, One Encounter’ auction honors Argyle mine closure
Photo credit: Rio Tinto

‘One Lifetime, One Encounter’ auction honors Argyle mine closure

The Argyle Diamond Mine in the remote east Kimberley region of Western Australia is scheduled to close by the end of 2020 following nearly forty years of production. "One Lifetime, One Encounter" is an auction event, offering a collection of the rarest diamonds extracted there over a year's production.

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What are ‘Hearts & Arrows’ diamonds?

Hearts & Arrows (H&A) diamonds are precisely cut to show kaleidoscopic patterns when seen in a special reflective viewer. Typically associated with Excellent-Ideal cuts of superior quality, fashioning the highest levels of H&A optical precision when working with the world's hardest substance is an exacting process.

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10 Graff diamond jewelry pieces compiled in video
Photo credit: Graff / Diamond-Works.com

10 Graff diamond jewelry pieces compiled in video

A well-organized compilation of 10 beautiful Graff creations, splendidly set to music. Settle in for 13 minutes and 13 seconds of glorious, uplifting creations from the masters at Graff.

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See this 10-carat LGD’s color transformed from yellow to pink!
Photo credit: IGI Worldwide

See this 10-carat LGD’s color transformed from yellow to pink!

This 10+ carat HPHT produced lab-grown diamond was initially graded Fancy Intense Yellow by IGI. When it returned to the lab its color had been changed to Fancy Vivid Pink. IGI confirmed that the color had been shifted from yellow to pink through irradiation using a 5MeV Electron Beam Transfer system.

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IGI Hong Kong opens new headquarters
Photo credit: Wikipedia

IGI Hong Kong opens new headquarters

IGI Hong Kong is pleased to announce the opening of new headquarters in the historic Hung Hom district, the home of numerous jewelry producers, international jewelry trade shows and expos and the Hong Kong Jewelry Manufacturer's Association.

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Tiffany ‘Full Craftsmanship Journey’ traces diamonds from mine to market
Image credit: Tiffany.com

Tiffany ‘Full Craftsmanship Journey’ traces diamonds from mine to market

Tiffany & Co. has announced a program detailing the provenance of the diamonds they sell, beginning with country and mine of origin. The New-York based jeweler plans to share this "Full Craftsmanship Journey" for every newly-sourced diamond of 0.18 carats or more.

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See video of this 15,858-diamond world record watch!
Photo credit: Coronet

See video of this 15,858-diamond world record watch!

Last year, Hong Kong based Coronet, a division of Aaron Shum Jewelry, set the Guinness World Record for most diamonds set on a watch at Baselworld, with "Mudan," adorned with an astonishing 15,858 diamonds weighing 50.01 carats.

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236 carat fancy-colored diamond breaks records
Photo credit: ALROSA

236 carat fancy-colored diamond breaks records

The Ebelyakh mine in Yakutia has yielded a number of remarkable colored diamonds in the past several years, including this newcomer. A 236 carat yellow-brown crystal which is the largest colored rough diamond ever extracted in Russia.

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