Exodus 39:2

⁶“They shall make the ephod of gold, blue, purple, scarlet, and fine twined linen, the work of the skillful workman. ⁷It shall have two shoulder straps joined to the two ends of it, that it may be joined together. ⁸The skillfully woven band, which is on it, shall be like its work and of the same piece; of gold, blue, purple, scarlet, and fine twined linen. ⁹You shall take two onyx stones, and engrave on them the names of the children of Israel. ¹⁰Six of their names on the one stone, and the names of the six that remain on the other stone, in the order of their birth. ¹¹With the work of an engraver in stone, like the engravings of a signet, you shall engrave the two stones, according to the names of the children of Israel. You shall make them to be enclosed in settings of gold. ¹²You shall put the two stones on the shoulder straps of the ephod, to be stones of memorial for the children of Israel. Aaron shall bear their names before the LORD on his two shoulders for a memorial.

⁷He put the tunic on him, tied the sash on him, clothed him with the robe, put the ephod on him, and he tied the skillfully woven band of the ephod on him and fastened it to him with it.

⁷onyx stones, and stones to be set for the ephod and for the breastplate.