The Knockout Collar features a brilliant-cut gemstone suspended elegantly from a bold link chain, secured with a signature DD toggle. Designed for versatility, the gemstone charm can be removed, and the piece can be styled as a lariat, worn front to back for multiple striking looks. Gemstone: Iridescent Pearl (Man-Made). This pearlescent gemstone is handcrafted as a doublet, a technique that lends extra radiance through a mother-of-pearl backing atop a crystal quartz gem. Material: DD Signature Gold Plated Over High-Quality Brass. Length: 14 - 19" (Adjustable) Gemstone Diameter: 22mm