Exodus 28:6-12

6and shall make the ephod of gold, blue, and purple, scarlet and twined byssus, of artistic work.

7It shall have two shoulder-pieces joined at the two ends thereof, where it is joined together.

8And the girdle of the ephod, which is upon it, shall be of the same, according to its work of gold, blue, and purple, and scarlet and twined byssus.

9And thou shalt 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 six names of the rest on the other stone, according to their birth.

11According to the work of an engraver in stone, as the engravings of a seal, shalt thou engrave the two stones with the names of the sons of Israel; surrounded by enclosures of gold shalt thou make them.

12And thou shalt put the two stones upon the shoulder-pieces of the ephod [as] stones of memorial for the children of Israel; and Aaron shall bear their names before Jehovah upon his two shoulders for a memorial.