General Information:
Chemistry: CaF2, Calcium Fluoride
Class: Halides
Group: Halides
Color: Extremely variable, but most common being purples, blues, greens, pinks, yellows and colorless. Many specimens are multi-colored.
Luster: Vitreous; transparent to translucent.
Crystal System: Isometric; 4/m bar 3 2/m
Crystal Habit: Typically cubic crystals, but also octahedron as well as other isometric habits. Twinning may occur, producing penetration twins that appear as two cubes growing together.