Grindstone Specialty Tops are Decorative Cement Overlays originally designed and formulated by us to be colorful and rustic. They are handcrafted, one of a kind pieces, with a variety of applications. In a nutshell, Grindstone is a product that replicates rock in color and texture; a product that is very durable and is artistic by nature. We offer 12 standard colors and 3 standard textures along with a variety of edge shapes. Grindstone Specialty Tops are produced in almost any size and shape.