Exodus 39:14-16

14The stones were for the names of the sons of Israel, twelve, corresponding to the number of their names. Each name corresponding to one of the twelve tribes was like the engravings of a seal.

15They made for the breastpiece braided chains like cords of pure gold,

16and they made two gold filigree settings and two gold rings, and they attached the two rings to the upper two ends of the breastpiece.