Friendship, love and loyalty are represented by this historic celtic design. A Amethyst claddagh ring with your birthstone or favorite color makes it even more significant. As the gem of peace and tranquility, amethyst is mesmerizingly beautiful. A durable and affordable gem, an amethyst ring is excellent for every day wear. Sapphire is the birthstone of September, and one of the most popular gemstones on the jewelry scene today. The deep blue color of a sapphire ring is just right for an evening out.