Snap & Set Pendant 10mm Round 4 Prong Sterling Silver (1-Pc) Snap and Set Pendants are easy to use "self setting" mountings. Just place your Stone face down on a wood or hard rubber surface, and press the Pendant straight down. When you hear the "snap", your Pendant is ready to wear! Snap and Set works great on Natural Stones and Cubic Zirconia, but is not recommended for use with Swarovski Stones. Size: Fits 10mm Stones