Exodus 28:15

12 And thou shalt put the two stones upon the shoulder-pieces of the ephod, to be stones of memorial for the children of Israel: and Aaron shall bear their names before Jehovah upon his two shoulders for a memorial.

13 And thou shalt make settings of gold,

14 and two chains of pure gold; like cords shalt thou make them, of wreathen work: and thou shalt put the wreathen chains on the settings.

15 And thou shalt make a breastplate of judgment, the work of the skilful workman; like the work of the ephod thou shalt make it; of gold, of blue, and purple, and scarlet, and fine twined linen, shalt thou make it.

16 Foursquare it shall be [and] double; a span shall be the length thereof, and a span the breadth thereof.

17 And thou shalt set in it settings of stones, four rows of stones: a row of sardius, topaz, and carbuncle shall be the first row;

18 and the second row an emerald, a sapphire, and a diamond;