Start by setting a budget. This will help you and our diamond experts narrow down your options as you consider what diamond to purchase, and other details, such as metal and pavé setting.
Next, measure your fingers — usually the left ring finger — so that you purchase the right size of engagement ring. After that, decide on which diamond shape you would like to be featured in your Cathedral engagement ring, as well as if you would like a pavé setting or engraving. As always, the most important rule for how to buy an engagement ring is to find the one that is right for you.