Exodus 39:14-18

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

And they made upon the breastplate chains at the ends, of wreathen work of pure gold.

And they made two ouches of gold, and two gold rings; and put the two rings in the two ends of the breastplate.

And they put the two wreathen chains of gold in the two rings on the ends of the breastplate.

And the two ends of the two wreathen chains they fastened in the two ouches, and put them on the shoulderpieces of the ephod, before it.