Tag Archives: grading diamonds

Diamond Evolution: Why the 4Cs is no longer an adequate pricing system

August 15, 2019

Using the 4Cs (colour, clarity, cut, and carat weight) to explain diamond pricing was developed by the Gemological Institute of America (GIA) in the 1950s. At that time, cloudy diamonds were considered ‘industrial-grade’ stones and were not set in jewellery.

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