Antique Georgian Diamond Ring in Oxidized Sterling SilverAntique Georgian Diamond Ring in Oxidized Sterling Silver. This special ring comes to us from the early Georgian period with 1. 09 carats of uniquely shaped rose cut diamonds set in oxidized silver. The ornate square mounting has a very regal, yet very dark and intense look and feel. The ring is also quite heavy, which adds to the important and striking design, and you could picture it being worn by royalty.