Though made in the 1970s by Finnish designer Jorma Laine, this still looks wearable and fresh today. It is made of bronze with a unique button clasp, and available from Ruby Lane seller Great Vintage Stuff. Finnish work has tended to be overshadowed by the better known Danes and Norwegians but their Modernist pieces are really intriguing and often sell for somewhat less because they are somewhat less known.

This sells for USD$125.