Vesuvianite
Chemical Formula	Ca10(Mg, Fe)2Al4(SiO4)5(Si2O7)2(OH,F)4
Species	Silicates
Crystal System	Tetragonal
Mohs Scale	6
Specific Gravity	3.32-3.43
Color	Yellow, green, brown; colorless to white, blue, Purple, bluish green, pink, red, black, commonly zoned
Streak	White
Luster	Vitreous, Resinous
Refractive Index	n = 1.703 - 1.752 n = 1.700 - 1.746
Diaphaneity	Transparent, Translucent
Cleavage	Poor/IndistinctPoor on Very poor on
Fracture	Irregular/Uneven, Sub-Conchoidal
Crystal Habit：Short pyramidal to long prismatic crystals common, massive to columnar
Geological Setting：Skarns or regional metamorphism of limestones.