Evoking the timeless styling of days gone by, these Onyx antique style rings connect you to the rich tapestry off all that have come before. Black and gold make a beautiful and elegant combination. A black onyx ring is a perfect accessory for any outfit. 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.