וַיְמַלְאוּ־ב֔וֹ אַרְבָּעָ֖ה ט֣וּרֵי אָ֑בֶן ט֗וּר אֹ֤דֶם פִּטְדָה֙ וּבָרֶ֔קֶת הַטּ֖וּר הָאֶחָֽד׃
And they set in it four rows of stones: a row of carnelian, topaz, and smaragd was the first row.
Targum Jonathan on Exodus
And they filled it with four rows of precious gems, (margalyan,) corresponding with the four corners of the world. The first row, carnelian, topaz, and carbuncle, row one: and upon them were engraven and expressed the names of three tribes, Reuben, Shimeon, and Levi.