AAA+ Good Quality Natural Green onxy Gemstone Stone Beads Necklace. They are a meaningful gift for mom, a friend, spouse, or family member during a special occasion. Birthstones and their vivid colors have long been a way to connect your birth month with rare and unique gemstones. They are a meaningful gift for mom, a friend, spouse, or family member during a special occasion. But they mean much more than that as you’ll find out below. We will cover the origins of these stones, how they’re typically uses, and describe each month’s birthstone and have lots of charts to go with it. They’re great stones for rings, necklaces, earrings, bracelets, charms, and more.