Exodus 39:10 (KJV)

And the curious girdle of his ephod, that was upon it, was of the same, according to the work thereof; of gold, blue, and purple, and scarlet, and fine twined linen; as the LORD commanded Moses.

And they wrought onyx stones inclosed in ouches of gold, graven, as signets are graven, with the names of the children of Israel.

And he put them on the shoulders of the ephod, that they should be stones for a memorial to the children of Israel; as the LORD commanded Moses.

And he made the breastplate of cunning work, like the work of the ephod; of gold, blue, and purple, and scarlet, and fine twined linen.

It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being doubled.

And the second row, an emerald, a sapphire, and a diamond.

And the third row, a ligure, an agate, and an amethyst.

And the fourth row, a beryl, an onyx, and a jasper: they were inclosed in ouches of gold in their inclosings.

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.