The Rivoli Shrag Rondelle is a round metal component with rhinestones set in the rim. The center area allows the designer to use a rivoli or chaton point back crystal stone to create a completely stunning effect. The 25MM fits an 18MM center stone. This unique piece has a gently convex back as opposed to the more pronounced back evident in the other sizes of this piece. Use these great pieces to make buttons, pendants, earrings, pins and more.