With signet rings being a classic type of heraldic jewelry that denotes a family's legacy, it is only natural to have one with a shield shaped face as many signet rings and examples of heraldry took the form of family crests. This particular piece has a face that measures approximately 15.4 x 16.2 mm. While we do not offer family crest engraving as a standard for our signet rings, we do allow for the engraving of initials to represent oneself or one's family. Engrave a single initial or up to 3 with computer, laser, or hand engraving for a very personal piece of jewelry that also makes an excellent gift.