Vanadinite

Vanadinite is a stone known for facilitating and expanding the mental process while also promoting action and production. It’s a perfect crystal for long hours of work, studying, or exercising. This stone activates the lower three chakras, giving one the enhanced focus and determination to see long sought out projects come to completion. Vanadinite also activates the third eye and allows for clear thought and patience during these long projects or workouts.

information from The Crystal Council