Before buying a diamond ring, it helps to know the basics like the Four Cs—cut,...

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

Before buying a diamond ring, it helps to know the basics like the Four Cs—cut, color, clarity, and carat—to understand what you’re paying for. Don’t forget to check the GIA grading report number to verify the diamond’s quality