Breastplate: for High Priest: Directions for the Making of
Source: Nav
Exodus 28:15–30
You are also to make a breastpiece of judgment with the same workmanship as the ephod. Construct it with gold, with blue, purple, and scarlet yarn, and with finely spun linen. / It must be square when folded over double, a span long and a span wide. / And mount on it a setting of gemstones, four rows of stones: In the first row there shall be a ruby, a topaz, and an emerald;