Engraved Elegant Heart Design Sterling Silver Compass Locket The Elegant Heart Design Sterling Silver Compass Locket has a beautiful brushed finish. These quality Sterling Silver compass lockets have ornate hinged covers that open to reveal 5/8 inch (15.9 mm) diameter working compasses. The lockets are stamped "925" to designate the quality Sterling Silver content (92.5% pure silver). The larger Elegant Heart Design Sterling Silver Compass Locket has nearly twice the silver content of the Classic Swirl and Compass Rose lockets, which significantly contributes to the price difference between the lockets. The Elegant Heart Shaped locket weighs 0.41 ounces, measures 7/8 inch (22 mm) wide, 13/16 inch (21 mm) tall, and 7/16 inch (9 mm) thick.