Browse our diverse collection of unique Onyx rings in your choice of white, yellow, or rose gold. From engagment rings to men's rings, from elaborate works or art, to simple and elegant designs, our 14K gold rings are unmatched in quality, beauty and price. Black and gold make a beautiful and elegant combination. A black onyx ring is a perfect accessory for any outfit. Gem of hot summer nights and steamy red sunsets, ruby is the birthstone of July. Show the world the passions within you with a fiery ruby ring.