Crystal Shell AB Square Rivoli also called the Cushion Stone, or the Square Fancy Stone is one of the most alluring stones. This stone does not have a hole. It has a large, perfectly polished front facet and the princess cut on the sides and the bottom. The princess cut makes this stone shine like a real diamond. An affordable and high quality alternative to Swarovski crystal is here! Part of Eureka’s NEW exclusive line of crystal beads and stones, Krakovski® Crystal will satisfy all your beading and jewelry needs! Explore the full range here.