IGI obtained two massive HPHT-produced lab-grown diamonds for evaluation and grading in September 2020. A kind of stones has develop into the World Document Holder for the biggest black lab-grown diamond in historical past.
source
IGI obtained two massive HPHT-produced lab-grown diamonds for evaluation and grading in September 2020. A kind of stones has develop into the World Document Holder for the biggest black lab-grown diamond in historical past.
source
