A traditional gift for an anniversary, these Blue Topaz rings are also appropriate for any occasion at all. The birthstone of December, the tranquil azure color of a blue topaz ring can evoke thoughts of warm Caribbean seas on a cold winter day. Black and gold make a beautiful and elegant combination. A black onyx ring is a perfect accessory for any outfit. 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.