The music instrument comprises of five slabs of black blue stone, which when arranged from small to big form a trapezoid. This is a typical character of ancient lithophone, different from new lithophones or sounding stone slabs.

The lithophone was unearthed by a farmer in Da Kai commune, Duc Linh district, when he dug holes for planting coffee trees.

Earlier, the Binh Thuan museum in coordination with a Japanese expert also discovered another lithophone at a site only 3km away from the place where the 3,000-year-old one was found.