FormulaMg3Si2O5(OH)
Origin 
Description yellow massive tumbled and polished Lizardite
Classification (Lapis) Serpentines
Crystal Systemhexagonal
Hardness2,5
ColourGreen, light yellow to white; colorless
Streakwhite 
Luminescencenone observed 
Lusterwaxy
Transparency (Opacity)semitransparent
Cleavageperfect
Fracture 
Magnetismnegative
Geological SettingTypically a product of retrograde metamorphism, replacing olivine, orthopyroxene, or other minerals in ultramafic igneous rocks.
Specific Gravity 2,57 g/cm3