Each stone varies. Lepidolite is excellent for emotional healing and balance, purification, serenity, relaxation and stress relief. This stone is an overall calming stone that's popular for meditative journeys. One of the most effective ways of receiving lepidolite's calming influence is to take a bath and place one or more stones in the water. It helps one release of identification with the ego and acceptance of the present moment. 
Physically, lepidolite is a great tool for anyone with mental or emotional imbalances and for sleep disorders such as insomnia due to stress.