Marble is a crystallized form of limestone that can be polished to a mirror finish. This causes the marble to seem more beautiful and deepens the stone’s color. Limestone has a softer, more porous appearance, but marble has a more consistent, robust consistency. Marble stone is one of the most expensive materials that can be used for kitchen countertops. Marble, even though it has an excellent appearance, possesses many other features that make it an excellent substrate material. Regardless of the room in which they are installed, Marble countertops will continue to have an appealing appearance for the whole of their lives, provided they are cared for correctly.