Exodus 28:10 (KJV)

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:

With the work of an engraver in stone, like the engravings of a signet, shalt thou engrave the two stones with the names of the children of Israel: thou shalt make them to be set in ouches of gold.

And thou shalt put the two stones upon the shoulders of the ephod for stones of memorial unto the children of Israel: and Aaron shall bear their names before the LORD upon his two shoulders for a memorial.

And thou shalt make ouches of gold;

And two chains of pure gold at the ends; of wreathen work shalt thou make them, and fasten the wreathen chains to the ouches.

And thou shalt make the breastplate of judgment with cunning work; after the work of the ephod thou shalt make it; of gold, of blue, and of purple, and of scarlet, and of fine twined linen, shalt thou make it.