Calacatta Umber is quarried in an area that experiences severe winters and as a result, the quarry is shut down for four to five months each year. Calacatta Umber has a clean, white background with darker veins. Due to the qualities of the stone, the slabs are book-matched; meaning slab one and slab two will be cut and polished to create a mirror image of each other. These are then kept in sequence, which allows for a consistent flow in pattern. When installing white marble, you must use a white thinset. Using grey thinset will leave trowel lines and could stain the marble.
Piece to piece variation in shade or color are inherent in all natural stone products; therefore, when installing natural stone tile, it is recommended to mix tiles from several boxes at a time during installation to achieve the best range of color. As natural stone products, it is recommended that these be sealed to extend their longevity.