Tourmaline corresponds to the heart chakra. This stone is an incredibly powerful heart opener and healer using yin energy. Assists in the healing of emotional wounds. Generates an electrical charge and emits soothing, negative ions to help relax the physical body. Various blue sapphires, the strongest of all blue gemstones, correspond to the throat and brow chakra. Helps one speak their truth. Calls in financial abundance and mental clarity.