Pietra Gray is a kind of dark grey with white quartz features populer marble quarried in Iran. This stone is especially good for Building stone,countertops, sinks, monuments, pool coping, sills, ornamental stone, interior, exterior, wall, floor , paving and other design projects. It also called Persian Grey Marble,Grey Pietra Marble,Pietra Grey Marble,Grey Crystal Marble,Pietra Grigio Marble,Graphite Grey Marble,Petra Gray,Persian Nero Marquina Marble,Persian Marquina Black…