"Men's signet rings have all sorts of connotations attached to them. Most are false. Though first devised to seal correspondence with an engraved family crest (something for posh people, since the unwashed masses couldn't even spell their own name), they're no longer solely reserved for country manor toffs.
Honest. Thanks to a wider choice of options - and a wider appreciation for men's jewellery at large - signet rings are an easy way to add some glint without looking like a Vegas loanshark. But if that is your shtick, we've even got a few of them below." Esquire Magazine.