In many parts of the world, lab-grown diamonds are now being produced in larger sizes and better clarity levels than ever before. Did you know that starting this October 2025, The Gemological Institute of America (GIA) will be changing how they grade lab-grown diamonds—moving away from the classic 4 Cs to just “Premium” or “Standard”? Meanwhile the International Gemological Institute (IGI); another one of the big three international laboratories, seems to be reaffirming its commitment to continue grading lab-grown diamonds the same way (using the 4C’s) at least for the time being.
In other related news, the World Jewellery Confederation or CIBJO (which serves as the confederation of national jewelry trade associations worldwide) is also set to reverse a decision made in 2010 - and insist that non-natural diamonds are labelled instead as 'synthetic' (similarly to how other man-made gemstones are described). This story is currently progressing as both sides of the industry are weighing in on how to most ethically handle the situation of lab-grown diamonds in our industry today.
