The Petoskey stone is a treasure sought out by many who visit the beaches of northern Michigan. Varied on the surface, each stone is a fossil of colonial coral believed to have lived in waters more than 350 million years ago. This 34mm Birdy features a gold PVD case and bracelet and a dial crafted from a polished Petoskey stone which shines in its unique beauty. Enjoy a timepiece that's beautiful-and has a story to tell. Note: Petoskey stone can vary in pattern and color. No two are the same. Signature Iconic Caseback Plate with Laser-Etched Serial Number 34mm gold PVD stainless steel case Thickness: 9.4mm Argonite 773 quartz movement Petoskey dial Gold PVD stainless steel bracelet with butterfly clasp Push-down crown Water resistant: 5 ATM Double-domed sapphire crystal Shinola Style #: S0120183156 - Shop the latest Shinola watches and other jewelry on BlackSkinny.com