Roberto Cavalli’s green and transparent Swarovski crystal-encrusted frog cocktail ring is a far more fabulous alternative to a prince this season. Slip on this statement-making silver-tone brass sparkler for your very own fairytale finish.Silver-tone brass frog ring with green and transparent Swarovski crystal embellishment. Roberto Cavalli ring has black crystals at eyes, an internal designer stamp and an opening at band.The price is $455.