Exodus 28:22

and the third row a jacinth, an agate, and an amethyst;

and the fourth row a chrysolite, an onyx, and a jasper. They shall be enclosed in gold in their settings.

The stones shall be according to the names of the children of Israel, twelve, according to their names; like the engravings of a signet, everyone according to his name, they shall be for the twelve tribes.

You shall make on the breastplate two rings of gold, and shall put the two rings on the two ends of the breastplate.

You shall put the two braided chains of gold in the two rings at the ends of the breastplate.

The other two ends of the two braided chains you shall put on the two settings, and put them on the shoulder straps of the ephod in its forepart.