Exodus 28:11-14

111As a jeweler engraves a signet, you shall engrave the two stones according to the names of the sons of Israel; you shall 2set them in filigree settings of gold. 12You shall put the two stones on the shoulder pieces of the ephod, as stones of memorial for the sons of Israel, and Aaron shall 3bear their names before the Lord on his two shoulders 4for a memorial. 135You shall make filigree settings of gold, 14and two chains of pure gold; you shall make them of twisted cordage work, and you shall put the corded chains on the filigree settings.