Grading

IGI Finds 6-Carat ‘Natural’ Diamond Is Actually Lab-Grown

GradingJun 14, 2021

IGI Finds 6-Carat ‘Natural’ Diamond Is Actually Lab-Grown

The submitted stone had been cut and polished with “meticulous precision” to match a natural diamond report, the lab said.

The lab-grown diamond report from the International Gemological Institute for a 6.18-carat stone recently submitted as a natural diamond
Bangkok—One gem lab recently found another lab-grown diamond submitted as a natural stone, and it’s a pretty big one.

The International Gemological Institute said it analyzed and graded a 6.18-carat round brilliant diamond stone at its Bangkok lab that had been submitted for verification.

It came with a report from the Gemological Institute of America stating it was a natural diamond of D color, flawless clarity, and triple excellent cut, but IGI established it was, in fact, a lab-grown diamond.

The lab’s gemologists realized the natural stone had been swapped with a lab-grown diamond, which had been cut and polished to match the GIA report’s data with “meticulous precision previously never seen.”

Additionally, the stone had been inscribed with a counterfeit report number, an issue GIA has been battling as of late.

 Related stories will be right here … 
IGI called the stone the largest lab-grown diamond to be certified by a gem lab in which “the sole purpose was to pass (it off) as natural,” and noted an increasing demand among consumers to be sure about the diamond they are purchasing.

“At IGI, we have seen a huge increase in double verification demand, which means before going for a major purchase, consumers like to receive confirmation that the stone matches the original report,” IGI Thailand and Hong Kong Managing Director Bob Van Es said. 
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

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