WOW! This is indeed a masterpiece fluorite from the famous Rufibach pocket, found 1962 on Vorderer Zinggenstock. The Rufibach family worked at this pocket for decades, and this is one of the very best fluorite specimens i have ever seen from this important alpine location. A large, well formed and totally undamaged fluorite octahedron is perched on a nicely contrasting granite matrix. Small calcites and smoky crystals set a nice contrast. What an awesome killer piece!