Exodus 28
9 Ref You shall take two onyx stones, and engrave on them the names of the children of Israel:
10 Ref six 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.
11 Ref With the work of an engraver in stone, like the engravings of a signet, shall you engrave the two stones, according to the names of the children of Israel: you shall make them to be enclosed in settings of gold.
12 Ref You shall put the two stones on the shoulder-pieces of the ephod, to be stones of memorial for the children of Israel: and Aaron shall bear their names before Yahweh on his two shoulders for a memorial.