Black Portoro Marble
One of the most exclusive marbles around the world, Black Portoro is quarried in municipalities of Portoverne and La Spezia in Italy. Black Portoro marble has a black coloured background accompanied by gold veins with white effervescence. This Italian marble has been quarried for centuries and has been used in many prestigious palaces across Europe. Black Portoro marble is best suited for highlighting purposes. It is also used in staircases and bathrooms.