The decorative rock made of fiberglass-reinforced plastic is particularly lightweight compared to real stones and is used wherever real rocks are too heavy, such as in set construction and in room or window displays. Due to its hollow interior, it is also excellent as a cover for sockets, transformers, or for pond pumps and filters in outdoor areas. Special emphasis was placed on achieving a natural color gradient in the stone imitation during production. Slight variations in dimensions, structure, and color are possible, just like with real boulders.