Valtura

* This fotography has only informative nature. Physical and mechanical features of certain sort of stone is being tested and determined by entitled institution. Test procedures are being followed by prescribed rules where a particular amount of stone samples for each particular sort of stone is placed on test procedure. Test results of physical and mechanical features of certain sort of stone indicate such features only for tested samples of certain sort of stone and such results may vary in reasonable degree from physical and mechanical features of same sort of stone that has not been placed on test procedure..