What is a seal in jewellery?
By Jared James · Last updated 21 May 2026
Definition
A seal in jewellery is an engraved stone or metal surface cut with a design in intaglio, meaning cut into the surface, so that when pressed into soft wax or clay it produces a raised impression of the design. Seals have been used since ancient Mesopotamia as a means of authentication, showing ownership or authority, and they remained important for legal and personal documents well into the nineteenth century. Signet rings are the most familiar wearable form of seal, with the carved face set into a ring so it can be kept on the hand, ready for use.
Frequently asked questions
- What is the difference between a seal and a signet ring?
- A signet ring is a ring that incorporates a seal. The seal is the engraved face, cut with a monogram, coat of arms or device in intaglio, and the signet ring is simply the ring setting that allows you to wear and use it. Historically signet rings were used to press their seal into wax to authenticate documents and letters.
- What stones are seals cut into?
- Hard stones that take a fine edge and survive repeated pressing are preferred. Carnelian, onyx, sardonyx, rock crystal and jasper are traditional choices, and some seals are cut directly into metal. The stone needs to be hard enough to hold a crisp design but not so hard it is impractical to engrave.
- Are seals still used today?
- Functional wax seals are no longer part of everyday legal or personal correspondence, but they have made a strong comeback in stationery and wedding invitation culture. Antique and custom seal rings are also worn purely as jewellery, valued for their historical character and personal significance.
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