Dakshinavarti Shankh, Valampuri Sanggu; Tamil: வலம்புரி சங்கு or Sri Lakshmi Shankh, is a sacred Hindu object otherwise known in English as a conch shell.
Sutshekhar Rasa as per its preparation methods contains "purified" mineral compounds like Swarna Makshik (Chalcopyrite), Shankh (conch shell) and heavy metals like Swarna (Gold), Tamra (Copper), Parad (Mercury) and Gandhak (Sulfur) along with other herbs.