See Metal I.D. Performed on an Antique Etruscan Necklace

Recently the IGI Lab in Shanghai received an antique Etruscan revival style necklace from the mid to late 19th century. When the necklace was submitted, IGI gemologists immediately understood the reason it was sent for identification: It seemed to weigh less than it should and, therefore, was suspected to be made of gilt copper, rather than gold.

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The Classic Chameleon Diamond
Photo credit: Chopard

The Classic Chameleon Diamond

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

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The Spinel Murder Mystery of 2015
Photo Credit: Emiliano Vittoriosi on Unsplash

The Spinel Murder Mystery of 2015

Mystery \ mist(ə)rē \ : inexplicable or secretive quality or character. A plot. An (international) intrigue, along with the solution to an enigma whose clues seem to lead to obvious…

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Same Carat Weight – Visible Size Differences

Different 1.00 carat diamonds can look different sizes. This is because we typically view diamonds from a single direction: Above. Imagine cooking a 1 pound meatball and a 1 pound pancake. On your scale they weigh the same. But the meatball's weight is distributed in a deeper geometry.

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See the Asteroid worth more than our global economy
Image credit: Maxar/ASU/P. Rubin/NASA/JPL-Caltech

See the Asteroid worth more than our global economy

The valuable asteroid composed entirely of iron and nickel drew to within 1.6 astronomical units (AU) of Earth over the weekend. If you're in the USA grab your telescope, escape light-pollution, find an elevated position and look to the north. 16 Psyche will be in the constellation of Taurus tonight.

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Register NOW for our Wednesday Webinar
Image from Shutterstock

Register NOW for our Wednesday Webinar

Click here to register and join us at 2:00 PM EST on Wednesday for "New Talking Points about Lab-Grown Diamonds," a 45-minute webinar from IGI and Jewelers of America. Whether you sell lab-grown diamonds or not, teaching your clients something new builds trust in your professional expertise.

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Scientific first – Diamonds created without heat
Photo credit: Crystal Kwok on Unsplash

Scientific first – Diamonds created without heat

Our planet's supply of diamonds were produced by four different processes. One took over a million years to achieve results. The next have been working in laboratories and factories, with increasing success, since the 1950s. But until this month man had never replicated that final process.

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Register for our Dec 2 Lab-Grown Diamond Webinar

Jewelers of America and IGI are pleased to present an educational webinar at 2:00 PM Eastern Time Wednesday December 2. Learn physical differences, distinctive characteristics and quality-factors attributable to growth methods and timelines.

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