Exodus 39:6-7, 13-14

They mounted the onyx stones in a setting of filigreed gold and engraved the names of the sons of Israel on them, then fastened them on the shoulder pieces of the Ephod as memorial stones for the Israelites, just as GOD had commanded Moses.

Fourth row: beryl, onyx, jasper. The stones were mounted in a gold filigree. The twelve stones corresponded to the names of the sons of Israel, twelve names engraved as on a seal, one for each of the twelve tribes.