There's no denying the power of the statement necklace. Bold, stunning, and deceptively decadent, this key piece of jewelry can instantly take your look from plain to polished. Pair our favorite picks — all $50 or less — with a crisp, collared blouse and pencil skirt for a standout office ensemble. Or amp up your favorite little black dress for a gorgeous party look. Check out our unbelievable finds from Mango, Forever 21, and more.