The International Gemological Institute (IGI) said in a release that its lab-grown diamond reports would now indicate whether treatments have been carried out post-growth.
“The popularity of lab-grown diamonds has heightened since IGI debuted the industry’s first reporting of the man-made gemstones 16 years ago,” said IGI CEO Roland Lorie. “As the technology advances and demand evolves, the Institute will continue to do right by the consumer and provide the highest quality of certification and customer service.”
For untreated synthetic diamonds, the new reports will outline the individual growth process (HPHT or CVD) and indicate specifically that the stones are “as grown with no indication of post-growth treatment.”