Exodus 39:6-8

Amplified Bible

⁶ They made the onyx stones, set in settings of gold filigree; they were engraved as signets are engraved, with the names of [the twelve tribes of] the sons of Israel. ⁷ And he put them on the shoulder pieces of the ephod to be memorial stones (a remembrance) for the sons of Israel (Jacob), just as the Lord had commanded Moses.

⁸ Bezalel made the breastpiece, the work of a skillful craftsman, like the workmanship of the ephod: of gold and of blue, purple, and scarlet fabric, and fine twisted linen.