The Tru Impressions Medieval Cobblestone stamp was inspired and created from hand-selected street stones from the 1600s. Fitted into two complementary, non-repetitive patterns, the stamp includes cobblestones in a variety of sizes to create a distinctive design. The pattern is devoid of any distracting straight lines, allowing easier use on multi-directional slabs without visual interference. Walttools. 888-263-5895.