Here we have a superb, cubed Fluorite crystal which is modified on the corners by octahedral faces. It has superb violet colour and is contrastful perched atop scalenohedral Calcite. Some faces are highly lustrous and some of them are showing a silky sheen. But the Fluorite here is absolutely pristine and it sits like a jewel atop the Calcite crystals. A great specimen from a great find in the 1980s. Ex Herbert Muntau collection.