Women's Formal Crystal Bib Collar Choker Necklace Set. Elegant Bold and Glamorous Formal Necklace Featuring a Silver Metal Rigid Bib Collar with Royal Blue Marquise Glass Crystals Interwoven with Sparkling Aurora Borealis Rhinestone Detailing and Small Accent Gems. Dimensional Shine and Regal Elegance. Silver Metal Neckline and Lobster Clasp Closure. Bib Measures 2.25 inches wide. Includes Matching Drop Post Backing Earrings Measuring 2.5 inches.