News

Advanced Search

Lab-Grown Diamond Morphs from Yellow to Pink

Sep 2, 2020 8:21 AM   By Rapaport News
Comment Comment Email Email Print Print Facebook Facebook Twitter Twitter Share Share


RAPAPORT...
The International Gemological Institute (IGI) recently graded a 10.06-carat, fancy-vivid-pink lab-grown diamond that had previously been submitted as a fancy-intense yellow.

The stone, which IGI had already fully assessed and graded in its original state, was returned in July for a second round, the lab said Tuesday.

IGI found that the lab-grown diamond’s color had been shifted through an irradiation treatment process performed with a 5MeV electron Beam Transfer system.

The organization’s gemologists determined that the color had been fundamentally changed to pink, and the level of saturation in the stone had increased to vivid. IGI also noted specific inclusions created by the High Pressure-High Temperature (HPHT) process matched in both stones. 

Update, September 22, 2020: This story has been changed to reflect that the stone was only treated using irradiation, not annealing.

Image: The diamond in its yellow and pink forms. (IGI Worldwide)
Tags: High Pressure-High Temperature, HPHT, IGI, International Gemological Institute, pink lab-grown diamond, Rapaport News
Similar Articles
Comments: (0)  Add comment Add Comment
Arrange Comments Last to First
© Copyright 1978-2020 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.