Logan Hollowell - Bull Skull Ring with DiamondsSolid 14k gold and 0. 20ct white diamond bull skull ring. The bull, and the time of year it is within, symbolizes being in tune with the instinctive earthy side of oneself. Because of its virility, power and regal presence, the bull has been an icon for worship in many ancient cultures. The bull was considered a sacred animal in ancient Mesopotamia, Greece, Rome and Egypt to name a few. The bull or Taurean denotes bodily, mental or spiritual strength;