No more 4C grading, now lab-grown diamonds are ‘premium’ or ‘standard’

The Gemological Institute of America (GIA) will discontinue applying the 4Cs grading system to lab-grown diamonds, opting for simplified descriptors like ‘premium’ or ‘standard’. This move distinguishes lab-grown diamonds from natural ones, addressing industry concerns about valuation and consumer understanding. Experts believe this change will foster transparency and trust within the diamond trade, particularly in India.