'Signet' in the Bible

With the work of a jeweler, like the engravings of a signet, you shall engrave the two stones according to the names of the sons of Israel. You shall have them set in filigree [settings] of gold.

The [engraved] stones shall be twelve, according to the names of [the twelve tribes of] the sons of Israel; they shall be like the engravings of a signet, each with its name for the twelve tribes.

“You shall also make a plate of pure gold and engrave on it, like the engravings of a signet, ‘Holy to the Lord.’

Then all whose hearts moved them, both men and women, came and brought brooches, earrings or nose rings, signet rings, and necklaces, all jewels of gold; everyone bringing an offering of gold to the Lord.

The stones corresponded to the names of the sons of Israel; they were twelve [in all], corresponding to their names, engraved like a signet, each with its name, for the twelve tribes.

They made the plate of the holy crown of pure gold, and wrote on it an inscription, like the engravings of a signet, “Holy to the Lord.”