Vintage Italian pendant in silver with coral

This is one of three similar pendants that were bought by a friend's parents in Italy in the 50s or 60s. It's a beautifully designed cube, each side about 5/8" square with a framed oval coral cabochon. The bail is marked Italy as well as three other characters, and the piece has been confirmed as solid silver. In very good condition, with an antique finish which I believe was intentional. (ga)