The Schufftein Glasses were invented by Emil Schufftein in 1878 and contain crystal diopters that penetrate and allow the wearer to see through a cloaking aura called 'glamour' that fairy folk and trolls emit. Only three pairs were ever made.
This was my interpretation of the Schufftein Glasses from Guillermo Del Toro's Hellboy II: The Golden Army. I tried to make it as screen accurate as possible, although I decided to make the metal engraving slightly more ornate.