Lepidolite

Pale-coloured micas containing substantial lithium are called Lepidolite. They are usually violet-pink and form hexagonal cleavable crystals and coarse to fine-grained masses. 

Lepidolite is to clear electromagnetic pollution and it is considered placing a piece on or near computer will absorb their emanations. It’s said when Lepidolite takes mica-like form it’s properties are greatly amplified.