Exodus 28:11-14

11With the work of an engraver in stone, like the engravings of a signet, shalt thou engrave the two stones, according to the names of the children of Israel: thou shalt make them to be inclosed in settings of gold. 12And thou shalt put the two stones upon the shoulder-pieces of the ephod, to be 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 settings of gold, 14and two chains of pure gold; like cords shalt thou make them, of wreathen work: and thou shalt put the wreathen chains on the settings.