Snow Quartz ?

Quartz – Snow
This is a stone of luck and good fortune that carries the yin energy.  Snow Quartz can help one to learn not to be a victim and to break self destructive habits that lead to others taking advantage of one’s giving nature.  It can also be very helpful in meditation and in finding one’s inner knowing and wisdom

Element: Water
Chakra: (7th) Crown
Zodiac: Capricorn
Planet: Moon