Inspired by the best-selling Signature Midi Knockout Studs, the Signature Knockout Pendant features a multi-faceted, brilliant-cut gemstone suspended on a fluid, adjustable box chain.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. Length: 18" (Adjustable) Gemstone Diameter: 10mm