A grapefruit is just a lemon that saw an opportunity and took advantage of it. —Oscar Wilde This enamel grapefruit pin has a 2-tone silver & gold finish with translucent enamel. Finish may tarnish and darken over time. To polish, add equal parts of warm water and baking soda to create a paste. Apply to the surface and leave it on for one hour. After the hour is up, use a soft toothbrush to scrub gently. Rinse with clean water and dry using a soft cloth.