The frame shows the Black Sea and a river called Sukko. The mineral stone is argillite. Argillite is a mass of clay that has hardened as a result of millions of years of mineralization. White veins formed when the hardening clay cracked under pressure. It cracked in a shape resembling a star. Over time, water washed quartz and mica minerals into the cracked cavities. They also hardened later. The entire mass ended up in the sea as a result of a landslide. Over time, the edges of the stone were smoothed by the surf. A storm threw the stone onto the shore.