Ever since news of Ciara's engagement to Seattle Seahawks star Russell Wilson [1] broke earlier this month, the world has been waiting to get a peek at her massive 16-carat sparkler. Following her relaxing vacation in the gorgeous islands of the Seychelles [2], the singer used the season grand opening of the Marquee Dayclub at the Cosmopolitan hotel in Las Vegas on Saturday as the perfect opportunity to finally show off the diamond stunner. While posing for photos in an edgy leather ensemble [3], Ciara whisked away her hair and casually flaunted her impressive bling [4]. Read on for an up-close look at the sparkler, and then check out the best celebrity engagement rings of all time [5].