Exodus 28:17-21

Put four rows of beautiful gems on the chest covering: The first row must have a ruby, topaz, and yellow quartz; the second must have turquoise, a sapphire, and an emerald; the third must have a jacinth, an agate, and an amethyst; the fourth must have a chrysolite, an onyx, and a jasper. Put gold around these jewels to attach them to the chest covering. There must be twelve jewels on the chest covering—one jewel for each of the names of the sons of Israel. Carve the name of one of the twelve tribes on each of the stones as you would carve a seal.