Portoro Silver is black marble with silver veins radiating through the flat surface of the slab. The Portoro Silver Marble is an ideal type of marble to be used on interior and exterior applications. It is common to find uses of this marble on flooring. wall coverings. bath design and diverse interior decoration.

Marble is a metamorphic rock composed of recrystallized carbonate minerals formed when limestone underneath the earth crust is exposed to high temperature and pressure. The colour of marble ranges from white to red and black as a result of impurities found in the marble. The calcite in the limestone undergoes recrystallization to form calcite crystals that transform the texture of the metamorphic rock

Marble has a unique appearance. varies in size of the grains and amount of veining because they quarried from different locations of the world. The variations in marble that are seen in a marble is based on the mineral deposits that give the colour and veining. Fine grained marble is more consistent in colour while heavier grains show more variation in colour.