Exodus 28:11-14

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.

13And thou shalt make enclosures of gold;

14and two chains of pure gold; of laced work shalt thou make them, of wreathen work, and fasten the wreathen chains to the enclosures.