Portoro is one of the most valuable and prestigious stones in the world, known as the "black gold" of the marble world. Representing Italian nobility, this stone has an unrivaled visual appearance with its intense yellow veins flowing like golden rivers on its deep and smooth black background. Portoro, which has been an indispensable part of palaces and the most luxurious buildings since ancient times, represents the highest level of magnificence, power and elite taste in every place where it is applied.