Halo sterling silver rainbow moonstone earrings These halo earrings have rainbow moonstone. Each earring has two round rainbow moonstones. The earrings have one rainbow moonstone above a sterling silver circle or halo with a rainbow moonstone in the center. The earrings are sterling silver. The rainbow moonstones are set in sterling silver. The earrings are 2" long and the halo has a 1/2" diameter. Moonstone is a feldspar gemstone with a blue or white sheen. Moonstone is a birthstone for month of June and the zodiac sign of Cancer. Moonstone is said to bring good dreams to the wearer and has healing powers.