Exodus 39:3-7

3Then they hammered out gold sheets and cut them into threads 1to be woven in with the 2blue and the purple and the scarlet material, and the fine linen, the work of a skillful workman. 4They made attaching shoulder pieces for 3the ephod; it was attached at its two upper ends. 5The skillfully woven band which was on it was like its workmanship, 4of the same material: of gold and of 5blue and purple and scarlet material, and fine twisted linen, just as the Lord had commanded Moses.

66They made the onyx stones, set in gold filigree settings; they were engraved like the engravings of a signet, according to the names of the sons of Israel. 7And 7he placed them on the shoulder pieces of the ephod, as memorial stones for the sons of Israel, just as the Lord had commanded Moses.