Circles with post earrings are earrings without backs (posts) and usually have a hinged loop that wraps around the ear. The two pieces of metal are soldered together, not just bent into place. These are often considered more classy and elegant than studs. Circle Posts are considered a bit more fancy than Post Earrings.
In the 1920s if a woman wore an evening dress to dinner she would likely wear a matching circle with post earrings that matched her ensemble. Does that not just speak elegance?
Sterling Silver(Bright)