11.28 carat ‘Infinite Blue’ Diamond could sell for $37 Million

On October 5 Sotheby’s Hong Kong will present the 11.28 carat “Infinite Blue” diamond, with a low pre-sale estimate of $26 million, and high estimate of $37 million. The final carat weight, ending in “8,” was deliberately planned, as it’s considered highly auspicious in Asian culture.

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IGI Resumes Diploma Programs in Turkey

IGI has resumed classes in Istanbul, again providing Middle East residents with training and paths to careers in the diamond, gem, and jewelry industry. Students from Turkey, Syria, and Iran attended the first classes to recommence last month.

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IGI Graduation Ceremony

IGI Graduation Ceremony Held in Rome

Some of IGI’s newest graduates were honored with a diploma ceremony in the evocative, historically significant lecture hall of Sapienza University in Rome. Timed to follow a major international gemological conference at the same site, the ceremony united over 30 IGI students and instructors from various parts of Italy.

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Fancy Colored Diamonds

21 Fun Facts – What Causes Diamond Color?

Only about 1 in 10,000 natural gem quality diamonds is fancy colored. Within that small percentage, some colors are more common than others, making certain of the colors extraordinarily rare. So, what causes us to see these various colors, and why are some so rare?

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carat weight scale

The Earthly Mystery of ‘Super Deep’ Diamonds

Mother Nature continues to amaze and delight us. Just as mankind seems to have “cracked the code” on the complexities of diamond creation up here, in our laboratories, she smiles and presents more earthly mysteries we have yet to solve.

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Scenes from JCK

Adieu Gabi ~ Our Diamond World Loses A Giant

Sir Gabriel (Gabi) Tolkowsky, one of the most accomplished diamond cutters of all time, has passed away at the age of 84. Knighted by the Belgian government in 2002 for service and contributions to the jewelry industry, Sir Gabi was trusted with cutting some of the world’s most iconic diamonds.

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IGI Certifies Historic 50.25 carat Lab Grown Diamond

Just days after certifying a record-setting 35 carat lab grown diamond, IGI has certified a 50.25 carat specimen measuring 22.95 x 18.45 x 11.57 millimeters – the first lab grown diamond to surpass the significant “half-century” mark in carat weight.

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IGI Certifies 35.00 carat Lab Grown Diamond

IGI has analyzed and graded a 35.00 carat laboratory grown diamond measuring 23.37 x 15.24 x 9.06 millimeters, the largest to date. Produced by Maitri Lab Grown Diamonds (Maitri), the new record holder was grown using the Chemical Vapor Deposition (CVD) process.

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Join IGI at JCK Las Vegas – Daily Schedule

Take note of IGI’s daily schedule for the upcoming JCK show, where we will offer onsite diamond screening and grading, provide education at two “JCK Talks” sessions, conduct demos and host happy hours daily, and provide information to attendees at two separate booth locations.

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Feriel Zerouki

World Diamond Council Elects First Woman President

Feriel Zerouki, a trailblazer in the diamond industry, made history last week as she officially assumed the role of president of the World Diamond Council (WDC). She becomes the first woman to hold this highly regarded position.

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Attend IGI Education Sessions at JCK Las Vegas

JCK attendees are invited to join IGI for two educational sessions, Thursday at 5:00 and Saturday at 10:00, at the 2023 JCK Show in Las Vegas.

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CNBC India

IGI Addresses Diamond Industry Developments on CNBC India

During the first international version of the IGI D Show in Dubai, May 5-7, 2023, CNBC India’s Manisha Gupta discussed diamond industry developments with IGI Global CEO Roland Lorie, and Tehmasp Printer, President of IGI India.

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Bright diamond

Setting Recommendations for D-Z Diamond Colors

Color is one of the most important factors in a diamond’s overall beauty and value. When selecting a setting it’s important to remember that the type of metal used can have a significant impact on how a diamond’s color appears. White, yellow and rose gold settings can all affect how a diamond looks.

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IGI GemBlog Climbs to Feedspot’s Top 5

The IGI GemBlog has improved its position among thousands of blogs and websites, ranked by traffic, social media followers, domain authority & freshness according to Feedspot, the internet’s largest human-curated database of bloggers.

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Webinar March 15

Register Now: Lab Grown Diamond Webinar, March 15

Join us March 15th at 2:00 pm ET for ‘Lab Grown Diamonds: What’s now? What’s new? What’s next?’ a webinar presented by IGI and THE MVEye, as part of National Jeweler’s Supplier Spotlight webinar series.

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Young students and parents

IGI Teaches Children About Gemstones

Students of the Eugenio Montale Institute in Italy participated in a series of learning sessions involving gemstones and human values. Gemologist Francesco Sequino added his professional experience and insight on behalf of the International Gemological Institute.

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The art of diamond grading
diamond loupe

Are ‘Post-Growth Treatments’ Permanent?

As lab grown diamonds gain popularity consumers have questions about the “post-growth treatment” comment seen on many IGI grading reports. Post-growth treatments are commonly used to reduce, eliminate or change the diamond’s color-appearance. Logically, people want to know “are the treatments permanent?”

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Gemologist Studying Diamonds

Inclusions Seen in Lab Grown Diamonds

There are two sophisticated ways of producing lab-grown diamonds. One process assembles the diamond in vertical layers and the other uses a metal catalyst to dissolve carbon. These different approaches produce inclusions which differ from those seen in natural diamonds.

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Video: ‘Behind The Scenes’ with IGI at NYC Jewelry Week

IGI provided a ‘Behind the Scenes’ tour to attendees of last month’s NYC Jewelry Week in Manhattan, showcasing the institute’s grading and appraisal processes for diamonds, gemstones, and jewelry.

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Students from 12 Countries in one IGI Antwerp Class

Last month IGI instructed a Polished Diamond Course in Antwerp attended by 15 students from 12 different countries; the most nationalities hosted in one class at IGI’s 14 worldwide schools since the pandemic.

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IGI GemBlog Ranked in Feedspot’s Top 10

The IGI GemBlog has earned a top position among thousands of blogs and websites, ranked by traffic, social media followers, domain authority & freshness according to Feedspot, the internet’s largest human-curated database of bloggers.

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IGI Educates Antwerp Diamond Bourse Visitors

Earlier this month IGI participated in a presentation at the Antwerp Diamond Bourse. The session, staged in the heart of Antwerp’s historic diamond district, was part of a ‘diamond immersion tour,’ arranged for a group of 60 jewelry enthusiasts.

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