And YHVH spoke to Moses, saying: "Speak to the children of Israel that they bring me an offering…
avnei shoham (stones of onyx), and stones to be set, for the ephod..." Exodus, Shemot, 25:17
Ancient words, ancient garments, a call from the past. The avnei shoham, stones of onyx, were chosen to be the home for the tribes of Israel. The names of six tribes were inscribed on one stone, and the other six on the second stone. These stones of onyx were were worn by Aaron and his sons, the first priests or Kohanim of Israel.