Sice the early 1900's, art-deco has been a prominent design style. In fashion, architecture, and visual design, art-deco is a lasting inspiration to artists off all types. These Onyx designs capture the elements of the art-deco trend and turn you into a work of art. Black and gold make a beautiful and elegant combination. A black onyx ring is a perfect accessory for any outfit. One of the oldest gemstones in history, garnet is the birthstone of January. Garnet rings have been popular since Victorian times, and are treasured for their deep red color.