Exodus 28:19-23

And the third row a ligure, an agate, and an amethyst.

And the fourth row a beryl, and an onyx, and a jasper: they shall be set in gold in their inclosings.

And the stones shall be with the names of the children of Israel, twelve, according to their names, like the engravings of a signet; every one with his name shall they be according to the twelve tribes.

And thou shalt make upon the breastplate chains at the ends of wreathen work of pure gold.

And thou shalt make upon the breastplate two rings of gold, and shalt put the two rings on the two ends of the breastplate.