Exodus 28:5-9

And they shall take gold, and blue, and purple, and scarlet, and fine linen.

And they shall make the ephod of gold, of blue, and of purple, of scarlet, and fine twined linen, with cunning work.

It shall have the two shoulderpieces thereof joined at the two edges thereof; and so it shall be joined together.

And the curious girdle of the ephod, which is upon it, shall be of the same, according to the work thereof; even of gold, of blue, and purple, and scarlet, and fine twined linen.

And thou shalt take two onyx stones, and grave on them the names of the children of Israel: