Women's Formal Crystal Collar Necklace Set. Elegant Evening Choker Collar Necklace Featuring Dazzling Shades of Blue Teardrop Cut Glass Crystal Gemstones Including Royal Blue, Aqua, and Green-Blue Arranged in a Stunning Statement Silhouette with a Gold Metal Chain Neckline and Lobster Clasp Closure. Radiant Sparkle and Refined Glamor. Collar Measures .5 inches wide. Includes Matching Teardrop Crystal Stud Post Backing Earrings Measuring .75 inches.