Handmade lead and nickel free Black Onyx Gemstone To insure your plated rings last a long time, avoid washing your hands with hash soaps, using chemicals, and participating in strenuous activity while wearing your rings Black onyx ring wire wrapped in non tarnish antique brass plated wire. The stone is 6mm. Made to order in your size and comes in a gift box. Since each ring is handmade and gemstones vary in color tone and pattern, there may be slight differences in each ring. To insure your plated rings last a long time, avoid washing your hands with hash soaps, using chemicals, and participating in strenuous activity while wearing your rings. Ring may appear larger in photos to show detail. Lead and nickel free. Always feel free to contact me with any questions or special requests.