Emperador Dark is quarried from a bedrock quarry near Novelda, Spain. In this particular marble, it will be normal to see white crystals and veins that are concentrations of white and clear calcite. It is a common characteristic for this stone to have voids in the raw material. Before it reaches the polishing stages, these voids are filled with a polyester resin. Depending on how deep the void is, the resin may shrink as it dries, leaving the surface of the filled area slightly lower than the rest. This does not affect the durability, maintenance or beauty of the stone. As a natural stone product, it is recommended that this be sealed to extend its longevity. Due to the nature of the tumbled finish, a stone-enhancing sealer will help to accentuate the natural colors in the stone that may be subdued after going through the tumbling process.