Apophyllite

Chakra: Third Eye, Crown
Element: Earth, Wind
Known As: Stone of Truth
Name Origin: From the Greek word "Apophylliso," meaning "it flakes off."
Planet: Earth
Rarity: Common
Resonant Number: 4
Zodiac: Libra, Gemini

Category: Phyllosilicate
Crystal System: Tetragonal - Ditetragonal Dipyramidal
Dana Classification: 72.03.01.00
Empirical Formula: KCa₄Si₈O₂₀(F, OH)•8H₂O
Name: Apophyllite
Space Group: P 4/mnc
Strunz Classification: 09.EA.15

Cleavage: {001} Perfect
Common Colors: White, Pink, Green, Yellow, Violet
Crystal Habit: Crystalline, Massiev, Pseudo Cubic
Diaphaneity: Transparent, Translucent
Formula Mass: 907.20 gm
Fracture: Uneven
Luster: Vitreous, Pearly
Mohs Hardness: 4.5 - 5
Pleochroism: Dichroic
Refractive Index: 1.536
Streak: White