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

https://foxtrot-wiki.win/index.php/Diamond_Color_Grades:_What_Will_I_Actually_Notice%3F

Before buying a diamond ring, it helps to know more about the Four Cs—cut, color, clarity, and carat—to understand your diamond’s value. Check for a GIA grading report number to verify quality