Exodus 28:12

28:12 You are to put the two stones on the shoulders of the ephod, stones of memorial for the sons of Israel, and Aaron will bear their names before the Lord on his two shoulders for a memorial.

Exodus 28:20-22

28:20 and the fourth row, a chrysolite, an onyx, and a jasper. They are to be enclosed in gold in their filigree settings. 28:21 The stones are to be for the names of the sons of Israel, twelve, according to the number of their names. Each name according to the twelve tribes is to be like the engravings of a seal.

28:22 “You are to make for the breastpiece braided chains like cords of pure gold,