What is a signet ring? Traditionally worn on the pinky finger, signet rings are literally rings with a mark or seal. Historically used mainly by men to seal documents, signet rings are now worn by everyone as a way to accent your personal style. Carrying a level of elegance and class, signet rings come in a variety of styles and multiple metals. Go for your sign with a zodiac signet ring, a minimalistic design, or choose a dazzling diamond.