IGI has confirmed it will continue applying the universal 4Cs grading to all diamonds, whether they are natural or lab-grown ...

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 ...

NEW YORK, March 16, 2020 /PRNewswire/ -- Gemological Science International (GSI), one of the largest gemological organizations in the world, annou ...

I am buying my girlfriend a diamond ring for Valentine's Day.How do I make sure I'm gettinga real diamond? -- L.T., Tulsa. Buy only the diamonds with grading reports ...

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'.