Before buying a diamond ring, it’s smart to understand the Four Cs—cut, color,...

https://hatton-garden-jewellers.co.uk/7-things-to-check-before-buying-a-diamond-ring

Before buying a diamond ring, it’s smart to understand the Four Cs—cut, color, clarity, and carat—to know exactly what you’re getting. Check for a GIA grading report number to ensure quality and authenticity