Natural cat's eye gemstone. Length / Circuit inside: 20 cm / Width: 1.5 cm / Thickness: 9.0 mm Weight: 64.8 grams Cat's eye is the effect seen in certain gemstones, like Chrysoberyl or Tourmaline, that causes a band of light to move across the stone's surface. This optical phenomenon, called chatoyancy, is caused by fibrous inclusions or cavities within the stone, resembling a cat's eye. Natural Cat's Eye refers to either Cat's Eye Chrysoberyl or Cat's Eye Tourmaline, with different meanings. Chrysoberyl Cat's Eye is thought to boost intuition, confidence, and provide protection from negative energies, fostering peace and spiritual awareness. Cat's Eye Tourmaline is primarily associated with love, emotional healing, and the heart chakra, facilitating forgiveness and understanding in relationships. Shipping registered.