THE CANCER was created with accents of moonstone& rose quartz. available in black onyx, howlite and lava rock. cancer is a cardinal water sign, ruled by the moon and is represented by the crab. moonstone connects you to the moons power, rose quartz provides unconditional love. the black onyx option brings protection. the howlite option brings peace. the lava rock option can be used for aromatherapy with essential oils.