This clear crystal vial is beautifully made and contains a liquid that gives off dim light out to 10 feet. This illumination will provide light in Darkness but not dispel it.

The Phial of Star's Tears has 5 charges and regains them at dusk:

Dancing Lights - 1 charge

Moonbeam - 2 charges, DC 16

Beacon of Hope - 3 charges

Notes: holding it aloft under a star lit sky.