Breastplate: had Names of the Tribes Engraved on Precious Stones

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; …

And they mounted on it four rows of gemstones: The first row had a ruby, a topaz, and an emerald;

The twelve stones corresponded to the names of the sons of Israel. Each stone was engraved like a seal with the name of one of the twelve tribes.