Lepidolite is one of the strongest lithium-crystals and because of it a great healer for depression, fear and panicattacks. It is strongly scattering negativity, calming and excellent protection against electromagnetic radiation (mobile, TV, computer).
Flat stone suits the best for healingwork, because it covers the chakra and the contact surface are is the largest. Also it will not fall off the body and is large enough to draw forth energetic and physical changes. Flat stones are also the best to carry in your pocket.