Friendly Diamonds says that round and oval-cut diamonds pair well with white gold rings. Round-cut diamonds are a timeless classic cut to perfection to radiate the most light. It’s no surprise they’re called brilliant round cuts. Oval-cut diamonds are a trending diamond shape this year. Many millennials love it because of its modern, chic, and sophisticated appeal. The oval diamond is also a favored cut because it makes the fingers appear slimmer creating a beautiful elongated look.