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Gemologists from IGI Shanghai recently provided images and information regarding one of nature’s rare and stunning wonders, the chameleon diamond.

IDEX was among the first jewelry industry news outlets to cover IGI’s unprecedented partnership with Diamond Standard, an entity which has received regulatory approval to offer the world’s only market traded diamond commodity – the Diamond Standard Coin.

The top winners of IGI’s Jewel Jewelry Design Contest, which attracted over 700 submissions, have been featured in Gold and Time, the NEXO Group’s digital platform for professional information on jewelry and watches, based in Madrid, Spain.

How do you define diamond quality? We value diamonds according to the 4Cs but the sticker price doesn’t necessarily reflect quality. What are the fundamental reasons people cherish diamonds? What makes diamonds “great”?

Gold and Time, the NEXO Group’s digital platform for professional information on jewelry and watches, based in Madrid, Spain, recently […]

IGI has recently partnered with The Jewelers Circle, offering 10% discounts on IGI New York’s Appraisal and Jewelry Identification report services. All registered members are eligible for these discounts.

Click here by Tuesday to enter IGI’s spectacular Valentine’s Day Giveaway. You can even earn multiple entries by answering a quick quiz, visiting IGI_Gemgrams on Instagram, subscribing to the IGI Gemblog (hint! hint!) and more.

IGI has designed a series of exclusive educational courses for members of the Bharat Diamond Bourse, the World’s Largest, with more than 4,000 jewelry professionals engaged in the import, export, manufacturing and marketing of rough and polished diamonds.

Mystery \ mist(ə)rē \ : inexplicable or secretive quality or character. A plot. An (international) intrigue, along with the solution […]

In a proactive move, delivering even more information to jewelry sellers and buyers around the world, IGI has added a new detail to its lab-grown diamond grading reports.

IGI North America President Avi Levy is one of 10 new members appointed. Founded Diamonds in 2007, Diamonds Do Good’s mission is supporting programs that develop and empower people in countries with significant economic dependence on the natural diamond trade.

Nature’s birthmarks? Or unsightly specks? What do you think? There are many different philosophies regarding natural diamond and gemstone clarity. What do you think? Should a diamond be allowed to have few blemishes, or should it be as clean as the pure driven snow?

Following a similar benchmark set three months ago, IGI Hong Kong recently certified the largest laboratory-grown diamond received to date. With a finished weight of 12.75 carats, this collection-quality man-made gemstone was fashioned from a staggering 46.20 carat CVD-grown rough crystal

Shopping by computer and smartphone is on the rise, with no sign of stopping. In the interest of serving consumers and retailers alike, IGI recently introduced a new digital platform for loose or mounted diamonds, gemstones and jewelry items.

Do you remember when our friends at Diamond DNA had us grade that incredible 10-carat lab-grown diamond transformed from intense […]

Where do you start seeing color in diamonds? Can you see the difference between F and H color? Can you see the difference between D and E color? In full context those answers will become diamond-specific.

Today we turn our attention to the optical phenomenon of iridescence, that is the display of dispersive prismatic colors caused by the interference of light – generally due to thin films of gas or liquid – like Iridescent Quartz, Iridescent Agate and Ammolite.

IGI has provided insight and advice to diamond, gem and jewelry industry professionals in tandem with JCK Online’s sponsored-content initiative: “Solving New Trends in the New Normal” addresses explosive growth in two disruptive industry areas.

Earlier this month IGI received two large HPHT-produced lab-grown diamonds for analysis and grading. One of those stones has become the Guinness World Record Holder for the largest black lab-grown diamond in history.

We are pleased to announce a new, elevated design for our identification and grading reports. This design update comes 45 years after our first Diamond report was issued in Antwerp, Belgium, in 1975.

Another independent analysis has concluded that IGI’s loose diamond grading ranks among the world’s strictest. In an independent comparison of dual-certified diamonds IGI’s color grading was stricter than that of GIA in a majority of cases, with clarity the same or stricter in most cases, as well.

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.

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.

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.