Barcelona is quarried from a bedrock quarry in Vigo, Spain. This granite is quarried in large blocks with a consistent structure and is abundantly available, thus making it ideal for large projects. It is a coarse-grain granite that remains consistent from shipment to shipment. Black spots ranging from the size of a dime, to the size of a fifty cent piece, will be present in this granite. During the polishing process, an epoxy resin is applied to the surface of the stone to fill in any natural pits, cracks or fissures that may exist. This does not affect the durability, maintenance or beauty of the stone. It is possible for some of the more minute pits that are too small to effectively hold the resin, to reopen during other finishing stages. However, this will not detract from the overall quality or appearance of the stone. As a natural stone product, it is recommended that this be sealed to extend its longevity.