From the French for 'a thousand grains', the tiny beads of a milgrain accent can add complexity and detail to a Amethyst design, as well as create a vintage or antique look. 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.