Tourmaline (one of my favourite stones) comes in just about every ray of colour, deep and soulful. Blue tourmalines connected to the throat and third eye chakras. Although calming and soothing, blue tourmaline can get to the nitty gritty so one discovers the real reasons for imbalance.
Green tourmaline, however, works with the heart chakra, working with nature and all things natural. Opening the heart to connect with Mother Nature, which allows growth and wisdom. Also connecting to animal and plant spirts. Ever notice the chatter of the forest?