This ring was made with a 6mm black Agate gemstone and 18g non tarnish antique copper plated wire. The ring in the photos is only an example of the piece you will receive. Ring will be made to order in your size. Since every piece is handmade there will be slight differences then the one in the photo. Let me know the size you need in the Conversation to seller section during checkout. Ring appears larger in photos to show detail.