Wikipedia
Marmorino Veneziano is a type of plaster or stucco. It is based on calcium oxide and used for interior and exterior wall decorations. Marmorino plaster can be finished via multiple techniques for a variety of matte, satin, and glossy final effects. It was used as far back as Roman times, but was made popular once more during the Renaissance 500 years ago in Venice.
Marmorino is made from crushed marble and lime putty, which can be tinted to give a wide range of colours. This can then be applied to make many textures, from polished marble to natural stone effects. Widely used in Italy, its appeal has spread through North America especially, but now worldwide. Because of the hours of workmanship, the pricing places it in the high-end market. However, many examples can be seen in public buildings, bars, restaurants, etc.
Its waterproofing and antibacterial qualities as well as visual effects have also made it very desirable for luxury bathrooms and other wet areas. Not confined to interior use, it can be seen on the exterior of many buildings to great effect.