Lava stone is said to alleviate anxiety, promote emotional tranquility and bring calmness and feelings of relaxation. Lava stone is supposed to have very powerful spiritual effects on the human mind. It's said to cleanse negative thoughts and emotions, as well as stimulate creativity.
Howlite cleanses and protects the Chakras. It is a very energizing stone. It also allows you to express your emotions calmly, allowing you to say what is necessary in a manner that is not offensive to the listener. This gemstone can be very effective to help connect you with your spirit guides.