British-found Roman Ring (ca. 20 CE)
Silver, 20 mm diameter x 4.9 mm shank
Red (glass?) stone; bezel 16mm x 12.1 mm
4.98 grams weight
Coppola Collection

This is definitely one of the oldest things I own, outside of some ancient coins, and I get a kick out of wearing it every now and then, knowing that some Roman owned it 2000 years ago.