seal ring

A seal ring is a finger ring bearing an engraved design or emblem that can be pressed into soft wax or clay to leave an impression, historically used to authenticate documents or mark ownership.

Also called a signet ring, it typically features initials, a family crest, or heraldic device carved in reverse so the impression reads correctly.

The flat bezel that holds the design is usually metal, though some antique examples use carved gemstones.