A signet ring is a special type of ring that has a design or symbol on it, which is unique to the person wearing it. It is like a personal stamp that represents the person's identity or represents an important family or organization. Full definition
During an archaeological dig on Hatteras Island in 1998, archaeologists discovered a 10 - carat gold English signet ring from the 16th century, among other artifacts. (en.wikipedia.org)
From the carefully groomed, designer suit - clad media wealth manager, to the tweed jacket and signet ring of the chap who dealt with the landed gentry, to the oil wealth manager's keffiyeh, the private wealth managers were carefully selected to make the best possible connection with their clients. (businessinsider.com)