Exodus 39:2-7

²And he made the ephod of gold, blue and purple and scarlet stuff, and fine twined linen. ³And gold leaf was hammered out and cut into threads to work into the blue and purple and the scarlet stuff, and into the fine twined linen, in skilled design. ⁴They made for the ephod shoulder-pieces, joined to it at its two edges. ⁵And the skilfully woven band upon it, to gird it on, was of the same materials and workmanship, of gold, blue and purple and scarlet stuff, and fine twined linen; as the LORD had commanded Moses.

⁶The onyx stones were prepared, enclosed in settings of gold filigree and engraved like the engravings of a signet, according to the names of the sons of Israel. ⁷And he set them on the shoulder-pieces of the ephod, to be stones of remembrance for the sons of Israel; as the LORD had commanded Moses.