They are skeletons of polyps and made of calcium carbonate . The colour is red and white.It helps
overcome all adversaries and enemies and fear of ghosts. It gives martial
bravery, spirit, tolerance, excitements, useful in growth of body, specialy
child and young, controls jealousy, anger, speaking lies.
Planet-Mars (mangal)
sign(rashi)-aries (mesha), scorpio(vrischik)
Metal-gold, copper, ashtadhatu.
Worship-hanuman chalisa.
Finger- ring finger.
Mantra :- Oum kram kreem kraum sah bhaumay namah.