Sterling silver rainbow post earrings with nano gems. At its most basic, the rainbow is a mix of light and mist - a perfect harmonic combination producing a phenomenon of supernatural beauty, transformation and enlightenment. There's a reason why we feel lucky when we spot a rainbow, and why children the world over love rainbows - they are magical events filling us with the glory of the natural world, and reflecting back all it's happy colors. These rainbow post earrings are perfect for anyone who needs a boost. Nothing can lift our spirits like color.