The size of lab grown men's studs totally depends on your unique taste. For instance, small studs with a carat value of 0.1 to 0.25 are ideal for a classic daily appearance. Whereas, 0.3 to 0.5 carats of medium-sized studs provide a diverse appearance appropriate for both professional and informal events. Choose bigger studs weighing at least 0.75 to 1 carat for a bolder look. Keeping in mind about the fact that face shape, occasion, and your preference for understated elegance matters when choosing the right size.