Gem Montebello was a collaboration of 60 artists commissioned by Giancarlo Montebello and his wife Teresa Pomodoro over about an eleven year span. The workshop was closed in 1978. Edival Ramosa from South America was one of these artists. This is a 800 silver geometric ring designed by him. The diameter is 1" and the geometric form rises 1/2". The ring is a small size 5 1/2 and could be sized by a jeweler. There is faint brown enamel on the ridges(see photos.) The ring shows normal wear from age and use and could use a gentle cleaning and polishing if desired. Incredible Art Jewelry from a celebrated Italian collaborative and South American artist.