Horseshoes are universally recognized as symbols of good luck, but there is some debate as to how they should be displayed. Some say that they should face with the heels up to catch luck, and others argue that they should hang heels down so the good fortune flows out. Whether on horses' feet or on jewelry, horseshoes typically feature seven (a lucky number) rivets. This c. 1880 locket is rendered in the shape of a horseshoe (oriented downward for the luck to flow forth) with seven pyramid studs.