Advanced Search

IGI Grades Record Blue Lab-Grown Diamond

Jan 23, 2022 8:45 AM   By Rapaport News
Comment Comment Email Email Print Print Facebook Facebook Twitter Twitter Share Share

 The International Gemological Institute (IGI) recently graded a 150.42-carat, blue synthetic diamond that ranks as the largest lab-grown rough ever, the organization claimed.

UK-based biotechnology company Meylor Global produced the type IIb stone using the High Pressure-High Temperature (HPHT) method. It also created a 141.58-carat grey that went to IGI for grading, the Belgium-headquartered laboratory said last week.

“The acceleration of technology in the lab-grown diamond sector is significant,” said IGI’s senior director of education, John Pollard. “We’re seeing new benchmarks from the world’s most advanced producers in jewelry applications and beyond.”

The new stones beat the previous record, which was also set by Meylor, IGI noted. In 2020, the company created a 115.65-carat, black lab-grown diamond as part of its “World’s Largest Black Diamonds Project.” At the time, the company stated it was looking at creating a synthetic stone larger than 200 carats.

Image: The blue (left) and grey (right) lab-grown diamonds. (International Gemological Institute)
Tags: High Pressure-High Temperature, HPHT, IGI, International Gemological Institute, John Pollard, lab-grown diamond, Meylor Global, Rapaport News
Similar Articles
Rapaport LogoRapaport Weekly Market Comment
Aug 11, 2022
News: Diamond market cautious amid China slowdown and US economic uncertainty. Polished prices declining. Inventory
Comments: (0)  Add comment Add Comment
Arrange Comments Last to First
© Copyright 1978-2022 by Rapaport USA Inc. All rights reserved. Index®, RapNet®, Rapaport®, PriceGrid™, Diamonds.Net™, and JNS®; are registered TradeMarks.
While the information presented is from sources we believe reliable, we do not guarantee the accuracy or validity of any information presented by Rapaport or the views expressed by users of our internet service.