וְהַטּוּר֙ הָרְבִיעִ֔י תַּרְשִׁ֥ישׁ וְשֹׁ֖הַם וְיָשְׁפֵ֑ה מְשֻׁבָּצִ֥ים זָהָ֛ב יִהְי֖וּ בְּמִלּוּאֹתָֽם׃
and the fourth row a beryl, and an onyx, and a jasper; they shall be inclosed in gold in their settings.
Read kabbalistic (mystical) interpretation of Exodus 28:20: and classical mystical sources.