A lovely collection of smaller {gem} rings for children, or petite hands. These rings are light and pretty and make perfect gifts. 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. 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.