A conch shell, with intricate carvings and believed to be at least 1000 years old, it is known as Shankha in Sanskrit.
This shell found in Orissa(India) during an excavation on the Ancient Sites on that area. It is fully depicting an Elephants and Vishnu on Garuda. Not much detail known about this Conch Shell but its truly a MARVELOUS PIECE OF ART!
Image Source : Google Images