Flat back sew-on stones Preciosa MC sew-on Rivoli are very popular two-hole sew-on Preciosa stones, which we offer in several sizes and which are an alternative to the SWAROVSKI 3200 Rivoli Sew-on Stone. Machine cutting and polishing ensures a precise cut and impeccable sparkle of each stone. Bottom side of these original Preciosa cut stones is finished with a layer of simili for even better shine and optimal optical properties.