This irregular diamond-shaped object with a relatively flat base is a large, grey desert rose made up of naturally formed gypsum crystals. Desert roses are created through a process involving gypsum formation below the surface of coastal or inland sabkhas. Due to extremely high evaporation rates, sabkha groundwater reaches salinity levels that exceed the concentration of seawater, causing gypsum, a calcium sulfate mineral, to precipitate and form desert roses. The color of desert roses varies depending on the sediment incorporated into the crystal structure. Desert roses are a common feature found in Qatar's coastal and inland sabkhas, particularly at Khor Al-Adaid and Dukhan.