A traditional gift for an anniversary, these Emerald rings are also appropriate for any occasion at all. The birthstone of May, an emerald ring symbolizes the eternally returning spring. The velvety green color of emerald is a perfect match for spring and summer fashions. Once considered more valuable than diamonds, a peridot ring is a must have. This "gem of the sun" is the birthstone of August and is a beautiful match for the lush green tapestry of late summer. Black and gold make a beautiful and elegant combination. A black onyx ring is a perfect accessory for any outfit.