26mm diameter. You receive a dozen of these rings. They are open and can be soldered or wired closed. They are a coppery brass. Some have more patina than others. The image is pretty true to what you will receive as far as the color variations.
If you are not delighted with your beads and beading supplies, we will gladly give you a store credit, exchange , or a refund within 30 days of purchase. Please see our shipping & returns page for the full details.