Exodus 39:4

Of the blue, purple, and scarlet, they made finely worked garments for ministering in the holy place, and made the holy garments for Aaron, as the LORD commanded Moses.

He made the ephod of gold, blue, purple, scarlet, and fine twined linen.

They beat the gold into thin plates, and cut it into wires, to work it in with the blue, the purple, the scarlet, and the fine linen, the work of the skillful workman.

The skillfully woven band that was on it, with which to fasten it on, was of the same piece, like its work: of gold, of blue, purple, scarlet, and fine twined linen, as the LORD commanded Moses.

They worked the onyx stones, enclosed in settings of gold, engraved with the engravings of a signet, according to the names of the children of Israel.

He put them on the shoulder straps of the ephod, to be stones of memorial for the children of Israel, as the LORD commanded Moses.