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 : Coastal Blue (Man-Made). With a lower environmental impact than naturally mined gemstones, our Man-Made stones are a highly durable alternative offering impeccable color consistency and a wider variety of hues. Metal : DD Signature Gold Plated Over High-Quality Brass. Length : 14 - 19" (Adjustable) Gemstone Diameter : 22mm