וְאַ֨בְנֵי־שֹׁ֔הַם וְאַבְנֵ֖י מִלֻּאִ֑ים לָאֵפ֖וֹד וְלַחֹֽשֶׁן׃
and onyx stones, and stones to be set, for the ephod, and for the breastplate.
Targum Jonathan on Exodus
the onyx stones, and stones for completing the enchasement of the ephoda and the breastplate.