Grassi Pietre relies on a large warehouse with over 8000 m. of slabs and blocks of the various Vicenza Stone types. Every single block is catalogued according to the different “courses”, i.e. layers within the quarry of origin. Besides, Grassi Pietre offers a wide selection of the finest Italian marble varieties. The dimensions of Vicenza Stone slabs vary according to the quarry and to the spot of origin within the quarry itself. In order to guarantee the material traceability, every single Vicenza Stone block is marked with the specific “course” (i.e. layer) in the quarry of origin. The “direction”, representing the sedimentation plane of natural stone stratification, is further indicated.