Blue green fluorite from Voltennes, FR

Blue-green fluorite from Voltennes, France.
 
 Old room and top ! RARE piece in greenish blue colors with fine Chalcedony crystals.
 Ideal for connoisseur looking for beautiful Fluorites .
 It deserves its place in the most beautiful collections or showcases .
 
 Video: https://www.youtube.com/watch?v=v0bfthptKRo
 
 Origin: Filon des Loges, Former Mine of Voltennes, La Petite Verrière, Saône et Loire (71), Morvan, France.
 Size: 11 cm by 8 cm by 5.5 cm for 535gr
 Chemical formula: CaF2
 Crystal system: Cubic
 Hardness Mohs scale: 4
 
 Definition :
 Fluorite (or fluorite ) is amineral species composed of calcium fluoride . The different trace ions are at the origin of the multiple colors and colored zoning encountered for this mineral .