An extremely rare engraved Roman gemstone has been discovered underwater by researchers near Venice in northern Italy. Researchers at the Ca' Foscari University of Venice found the ancient piece of jewelry during an excavation dive in Lio Piccolo, a village just north of the city. It appears to be engraved with a mythological figure, and has a colorful, stripy appearance.

Professor Carlo Beltrame, who led the excavation alongside Dr. Elisa Costa, said in a statement that it was a rare find, especially in an underwater environment. It isn't the first such discovery in that area, which suggests it's a place that used to be visited by wealthy Romans.