Exodus 28:9-12

“Take two onyx stones and write the names of the twelve sons of Israel on them, six on one stone and six on the other. Write the names in order, from the oldest son to the youngest. Carve the names of the sons of Israel on these stones in the same way a person carves words and designs on a seal. Put gold around the stones to hold them on the holy vest. Then put the two stones on the two straps of the holy vest as reminders of the twelve sons of Israel. Aaron is to wear their names on his shoulders in the presence of the LORD as reminders of the sons of Israel.