Exodus 25:7

καὶ λίθους σαρδίου καὶ λίθους εἰς τὴν γλυφὴν εἰς τὴν ἐπωμίδα καὶ τὸν ποδήρη.

and stones of Sardius and stones for the engraving for the ephod and the full-length robe.

אבני־שׁהם ואבני מלאים לאפד ולחשׁן׃

*   Exodus 25:7 = Exodus 25:6 in other LXX editions
*   καὶ τὸν ποδήρη NOT in Hebrew
*   ephod OR breastplate
*   full-length robe OR long robe, i.e.  reaching to the feet