Exodus 39:22-26

He also made the robe of the ephod woven all of blue, and the opening of the robe in it was like the opening in a garment, with a binding around the opening, so that it might not tear. On the hem of the robe they made pomegranates of blue and purple and scarlet yarns and fine twined linen. They also made bells of pure gold, and put the bells between the pomegranates all around the hem of the robe, between the pomegranates— a bell and a pomegranate, a bell and a pomegranate around the hem of the robe for ministering, as the LORD had commanded Moses.