Then mount four rows of precious stones on it. The first row shall be carnelian, chrysolite and beryl;
References for Exodus 28:17
the second row shall be turquoise, lapis lazuli and emerald;
the third row shall be jacinth, agate and amethyst;
the fourth row shall be topaz, onyx and jasper. Mount them in gold filigree settings.
References for Exodus 28:20
There are to be twelve stones, one for each of the names of the sons of Israel, each engraved like a seal with the name of one of the twelve tribes.
References for Exodus 28:21