large gypsum rock or stone surrounded by water. big wet calcite washed in the river shore with lots of waves

alabaster big calcite clear crystal crystalline deposit digging element excavation extraction field gem gemstone geology gypsum jewel jewellery large lave limestone lots mineral mineralogy mining occurrence polished precious production river riverbank riverside rock rub semi shine shore solid stone surface surrounded textured tough toughness translucent wash washed water wave waves wet white