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

https://wiki-zine.win/index.php/How_Do_I_Verify_a_GIA_Report_Number_Before_I_Buy%3F

Before buying a diamond ring, it helps to know the basics like the Four Cs—cut, clarity, color, and carat—to understand quality and value. Check if the diamond comes with a GIA grading report number for trusted certification