Round is by far the most popular and also classic diamond shape. All other diamond shapes than the round cut are called “fancy cuts”. With a round cut diamond adorning an engagement ring, you can almost never go wrong: Round cut diamonds are a very safe choice. Also, round is one of the diamond shapes that look biggest in relation to their carat weight.
My Diamond Ring’s virtual ring sizer helps you to get an idea of how each one of the settings below looks like with a diamond of a particular size.