Exodus 39:7-9

Amplified Bible, Classic Edition

⁷ And he put them on the shoulder pieces of the ephod to be stones of memorial or remembrance for the Israelites, as the Lord had commanded Moses.

⁸ And [Bezalel] made the breastplate skillfully, like the work of the ephod, of gold, blue, purple, and scarlet [stuff], and fine twined linen.

⁹ The breastplate was a [hand’s] span square when doubled over.