From Ancient Egypt seals in the form of signet-rings of kings have been found.
From the en.wikipedia.org
The only cure is for Shakuntala to show him the signet ring that he gave her.
From the en.wikipedia.org
There were signet rings, betrothal rings and magical rings that protected the wearer.
From the jsonline.com
Signet was founded in California in 1969 as a specialist lens manufacturer.
From the thisisbristol.co.uk
Signet Armorlite, a manufacturing company, can emit methylene chloride, a carcinogen.
From the signonsandiego.com
Signet had produced a settlement sum but Co-op was waiting for me to phone.
From the guardian.co.uk
Now, we just all need to wear a signet ring with our Twitter pic as a seal.
From the techcrunch.com
She sends a slave with the signet to fetch the girl and bring her to the country home.
From the en.wikipedia.org
Signet benefited from improved sales of its U.S. brands at stores open at least a year.
From the online.wsj.com
More examples
A seal (especially one used to mark documents officially)
An object (especially a ring) formerly used to impress a picture into the sealing wax of a document as a proof of its origin
The Seal of the Court of Session and a sign of its authority. It is applied to a summons as authority to serve the summons on the defender.
A ring bearing a personal or family emblem.
A ring with a flat table or face on which there is an inscription of a coat of arms, family crest, or some other type of insignia or monogram.
The personal seal of the monarch of England, developed into a separate royal secretariat in the 14th century; also used in a more general sense for a small personal seal
[Gen 38:18; Ex 28:11; Ex 39:14; Jer 22:24; Dan 6:17; Hag 2:23] a seal; an ornate badge.
A personal seal once used to make wax impressions for signatures or authenticating a document. The seal would usually be in reverse, so the impression in the wax could be viewed normally.