They fashioned the breastpiece—the work of a skilled craftsman. They made it like the ephod: of gold, and of blue, purple and scarlet yarn, and of finely twisted linen.
References for Exodus 39:8
It was square—a span long and a span wide—and folded double.
References for Exodus 39:9
Then they mounted four rows of precious stones on it. The first row was carnelian, chrysolite and beryl;
the second row was turquoise, lapis lazuli and emerald;
the third row was jacinth, agate and amethyst;
the fourth row was topaz, onyx and 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.
References for Exodus 39:14
For the breastpiece they made braided chains of pure gold, like a rope.
They made two gold filigree settings and two gold rings, and fastened the rings to two of the corners of the breastpiece.
They fastened the two gold chains to the rings at the corners of the breastpiece,
and the other ends of the chains to the two settings, attaching them to the shoulder pieces of the ephod at the front.
They made two gold rings and attached them to the other two corners of the breastpiece on the inside edge next to the ephod.
Then they made two more gold rings and attached them to the bottom of the shoulder pieces on the front of the ephod, close to the seam just above the waistband of the ephod.
They tied the rings of the breastpiece to the rings of the ephod with blue cord, connecting it to the waistband so that the breastpiece would not swing out from the ephod—as the LORD commanded Moses.