Exodus 35:9 Halakhah

וְאַ֨בְנֵי־שֹׁ֔הַם וְאַבְנֵ֖י מִלֻּאִ֑ים לָאֵפ֖וֹד וְלַחֹֽשֶׁן׃

and onyx stones, and stones to be set, for the ephod, and for the breastplate.

Read halakhic rulings (Jewish law) on Exodus 35:9: and classical halakhic sources.