Looking for the perfect diamond engagement ring? You’ll need to know about the 4Cs of diamond quality, metal characteristics, setting styles and more.

Follow these tips for buying an engagement ring to make a smart purchase:

1) Know the 4Cs
2) Know diamond shapes and cut styles
3) Look at diamonds under different lighting
4) Pick a metal for the band
5) Choose the setting
6) Consider side stones
7) Know styles, motifs and trends
8) Measure ring size
9) Insist on a diamond grading report