Exodus 28:9-12

“Take two onyx stones and engrave on them the names of the sons of Israel in the order of their birth—six names on one stone and the remaining six on the other. Engrave the names of the sons of Israel on the two stones the way a gem cutter engraves a seal. Then mount the stones in gold filigree settings and fasten them on the shoulder pieces of the ephod as memorial stones for the sons of Israel. Aaron is to bear the names on his shoulders as a memorial before the LORD.