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

https://bizzmarkblog.com/marquise-diamond-looks-huge-is-it-just-the-shape/

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