This paper deals with the results of continuous grinding tests carried out with two different grinding machines on some marble and limestone units with silicon carbide and diamond type abrasives. The results showed that the relationship between the surface roughness and the surface glossiness of stones with homogeneous structure are independent of abrasive types. However, this argument is not valid for stones giving orange peel effect, and not going through entire ductile behaviour due to their softer mineral and other materials content. Appropriate series of abrasives and operational conditions should be chosen for obtaining desired surface quality. For this reason, the results of surface quality measurements should be used in conjunction with stone properties. (c) 2007 Elsevier B.V. All rights reserved.