The "Half Shell" is a 1" Hidden Bail, Pendant Featuring a Super High-Luster, Baroque, South Sea Keshi Pearl, in a Stylized Oyster Shell, Speckled with Tourmaline, Made of Anti-tarnish Sterling, with 18k Gold Accents & Presented on a Matching 16" - 18" Oval Link, Sterling Chain with 2" Extender. ...It IS a FABULOUSLY BEAUTIFUL Work of ART!!