David Yurman Pure Form Bronze and Sterling Silver Ring with Cognac Diamonds size 6. I bought this beautiful Ring at the David Yurman Store in Dallas, TX and is guaranteed to be authentic. It has very little wear and comes with a David Yurman Ring Box and a small treated plastic bag to store the Ring. Bronze is a living finish and will patina. The bag has been great in slowing down that process in between polishing. Feel free to ask for more information!