sankha
Śaṅkha (Sanskrit: शङ्ख) is a conch; refers to a musical instrument;
This is a special symbol of Vishṇu. His conch is known as Pañchajanya, being made from the body of the demon Pañchajana. It makes a frightening noise and terrifies the enemies of Vishṇu.
In sculptural representations, the conch appears plain or ornamental. In the latter case, its head is covered with a decorative metal cap, surmounted by a lion-head and having a cloth tied round it.
Tassels of pearls may also hang from the sides.
Sankha