M. Cohen's oxidized sterling silver ring features a spinning square blue tiger's-eye cabochon at the face. Founded by Israeli designer Maor Cohen, the brand handcrafts all of its pieces in its Los Angeles-based studio. Handmade. Square blue tiger's-eye cabochon. Oxidized sterling silver. 4.0mm band width, 1.5cm face width (approximately). Made in U.S. For information about additional ring sizes, please contact our customer service representatives via email at webservices@barneys.com or by phone at 888.222.7639. M. Cohen Men's Spinning Tiger's-Eye Ring - Blue A great designer gift. Shop M. Cohen at Barneys New York.