Pietersite Thunderstorm Earrings. Pietersite is the ‘Tempest Stone’. As a thunderstorm cleanses the atmosphere, Pietersite cleanses our aura. The cross-over of natural minerals creates a reflection of shimmering chatoyancy in various tones of blue with touches of naturally occurring golden tigers eye. We combined this powerful stone with soothing, glowing Moonstone to enhance its beauty and energy.