Proconnesian marble
A coarse variegated marble, quarried on the island of Proconnesus, present-day Marmara Adasi, Turkey, that is either gray, white, or white with gray stripes.
A coarse variegated marble, quarried on the island of Proconnesus, present-day Marmara Adasi, Turkey, that is either gray, white, or white with gray stripes.