Complete crystal of historic fluorite from La Viesca mine, Asturias. Bicolor, fluorescent, multi-beveled, dodecahedral Piece of a very good size extracted from the first geode found in the old and famous mine of La Viesca. Without breaks and has tectonic fractures that create beautiful incidents and color changes depending on the light.
Fluorite is a mineral of group III (halides) that, according to the Strunz classification, forms the elements calcium and fluorine.
Its structure belongs to the cubic system, and it appears with cubic, octahedral and rhombododecahedral habit.
Fluorite presents physical properties of thermoluminescence and fluorescence.
In industry, it is mainly used in iron and steel metallurgy. It is used as a source of fluorine and hydrofluoric acid, also in the glazing of ceramics and in the manufacture of optical glasses.
The beauty of the specimens makes it a highly appreciated mineral by museums and private collectors.
