Exodus 39:2-7

²And he made the ephod of gold, blue, and purple, and scarlet, and fine twined linen. ³And they did beat the gold into thin plates, and cut it into wires, to work it in the blue, and in the purple, and in the scarlet, and in the fine linen, with cunning work. ⁴They made shoulderpieces for it, to couple it together: by the two edges was it coupled together. ⁵And the curious girdle of his ephod, that was upon it, was of the same, according to the work thereof; of gold, blue, and purple, and scarlet, and fine twined linen; as the LORD commanded Moses.

⁶And they wrought onyx stones inclosed in ouches of gold, graven, as signets are graven, with the names of the children of Israel. ⁷And he put them on the shoulders of the ephod, that they should be stones for a memorial to the children of Israel; as the LORD commanded Moses.