Silver Hinged and Tube Hoop Earrings (16 mm Diameter)Silver Hoop Earrings These hinged, tube style hoop earrings are crafted from 925 sterling silver and measure 16 mm in diameter. The metal is composed of 92. 5% pure silver, authenticated by a 925 stamp, which provides both durability and a bright finish. Designed to be lightweight for comfort, the earrings fasten with a simple hinged closure that clicks securely into place.