Water jet cutting systems have become an important alternative in natural stone production processes, especially in the last years. This paper investigates the cutting performance of the abrasive water jet systems in cutting two different natural stones from different genesis. In the research, the standoff distance and the abrasive feed rate parameters were investigated. Cutting performance of the systems was determined on the cutting depth, cutting width and cutting wear zone parameters. Analyses of the results of the experiments showed that low standoff values provided improved cutting performances. On the other hand, increase of the abrasive mass flow rate brought the result of increased cutting depth. However, the cutting width and surface qualities affected adversely both with higher standoff and abrasive mass flow rate values.