Then they mounted four rows of precious stones on it. In the first row there was a ruby, a topaz and a beryl;
in the second row a turquoise, a sapphire and an emerald;
References for Exodus 39:11
in the third row a jacinth, an agate and an amethyst;
in the fourth row a chrysolite, an onyx and a jasper. They were mounted in gold filigree settings.
References for Exodus 39:13
There were 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.1
References for Exodus 39:14