Gealach is the Irish word for moon it also refers to the brightness of the moon - our crescent moon earrings are finished with a sandblast effect to give a glistening frosted effect. These earrings are the perfect accompaniment to our star sparkle earrings. What are the stars without a few moons. Made in sterling silver they can be bought as a pair or mix and match with our Star Sparkle Earrings.