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GIA Overhauls Lab-Grown Diamond Grading
publisherhu
time2025/10/28
- From October 2025, GIA will discontinue 4C grading for lab-grown diamonds, replacing it with descriptive ratings (Premium/Standard). This aims to clarify distinctions from natural diamonds
GIA Overhauls Lab-Grown Diamond Grading
From October 2025, GIA will discontinue 4C grading for lab-grown diamonds, replacing it with descriptive ratings (Premium/Standard). This aims to clarify distinctions from natural diamonds/f752005/How-to-care-for-gemstone-jewelry.htm/products-list.htm