5/16 inch star
A 5⁄16-inch star (9.7 mm) is a miniature gold or silver five-pointed star that is authorized by the United States Armed Forces as a ribbon device to denote subsequent awards for specific decorations of the Department of the Navy, Coast Guard, Public Health Service (PHS), and National Oceanic and Atmospheric Administration (NOAA). A gold star indicates a second or subsequent decoration, while a silver star is worn in lieu of five gold stars.