When you think of shark-tooth jewelry, you probably envision a single fang hanging next to a few puka shells on a braided, hemp necklace. Fast forward to 2015, where the chicest designers have reinvented the trend by replacing beachy materials with delicate gilding and pavé diamonds. Below, 5 pieces—in honor of the start of Shark Week—sure to take a bite out of your style game. (Sorry, we had to.)