Tiaras have traditionally been worn on the heads of queens and other royals, as well as elite members of society. Now, tiaras can be worn by anyone. A great way to wear a tiara is on your finger. Tiaras, unlike crowns, are half a circle, or semi-circular. This style allows tiara rings to fit snugly with numerous diamond rings, such as solitaire engagement rings. Sparkling diamonds combined with regal style create a ring you will want to wear every day.