Palmstones are perfect to hold onto when you need to benefits of a particular stone.
Labradorite is known as the Stone of Transformation.  It is a useful companion through change, imparting strength and perseverance.  It balances and protects the aura and raises consciousness and grounds spiritual energies.  It strengthens intuition and promotes psychic abilities.  It is also carried for good luck. 
Chakras:   Throat, Third Eye, and Crown