Blue coral (Heliopora coerulea): Aragonite (calcareous endoskeleton} Mohs: 3. Smoothes the nerves, brings peace, stability and a positive outlook to life. Balances your material and spiritual needs. increases fertility and longevity. Blue Coral activates and energizes the throat chakra and the third eye chakra, enhancing communication and psychic awareness. Blue Coral may be used to facilitate permanence and improve the pursuits of commerce. It aids and facilitates communication and the ability to relate with others. Blue Coral has been used in the treatment of throat ailments, for cleaning and purging the mucoid system and has been used to ameliorate disorders and to enhance remediation of the liver, the pituitary gland, the pineal gland, and the circulatory gland.