By far the most popular size of diamond stud earrings is one carat TCW. This size is big enough being apparent and suits a popular spending budget people have for diamond earrings. My most loved set of one cttw studs are these stunners in a white gold martini setting from https://simonczguc.shotblogs.com/the-smart-trick-of-cross-earring-for-men-that-no-one-is-discussing-45879169