The Glassmakers of Venice
In the early 1200s in Venice, early craftsmen knew that shaping rock crystals into convex shapes could form “lapides ad legendum”, also called “oglarii di vitro”, or the so-called “stones for reading”. Regular use of these reading stones dated back to 1000 AD. However, the Capitulary of the Guild of “Crystal Craftsmen” allowed the use of these (more…)