Labradorite

Labradorite is a beautiful variety of feldspar which is usually pale grey-blue to dark grey, green-brown to black. Labradorite is known for its bright flashes of iridescence, typically blue or gold. These light displays are caused by internal fractures in the mineral reflecting light back and forth and dispersing it into different colours. This optical occurrence is known as labradorescence. 

Labradorite is believed to keep the aura clear and reveal hidden talents or psychic abilities.