Spodumene
Chemical Formula	LiAl(SiO3)2
Species	Silicates
Crystal System	Monoclinic
Mohs Scale	6-7
Specific Gravity	3.03-3.23
Color	Highly variable: white, colorless, gray, pink, lilac, Purple, yellow and green, may be bicolored; emerald green - hiddenite; lilac - kunzite
Streak	white
Luster	Vitreous, Dull
Refractive Index	n = 1.648 - 1.661 n = 1.655 - 1.670 n = 1.662 - 1.679
Diaphaneity	Transparent, Translucent
Cleavage	Perfect
Fracture	Uneven to subconchoidal
Crystal Habit：prismatic, generally flattened and elongated, striated parallel to , commonly massive