Inspired by rare pink auroras, this freshwater pearl flew to the stratosphere on Sept. 25, 2020, during a G1-class geomagnetic storm. It hitched a ride onboard an Earth to Sky Calculus cosmic ray balloon, which we  launched to measure radiation while the storm was underway. At the apex of the flight, it floated 112,205 feet above the Sierra Nevada mountains of central California.
 
Measuring 9 mm in diameter, the pearl is mounted on a 925 sterling silver infinity twist and suspended on a matching 17 inch long sterling silver chain. 
 
Each one comes with a greeting card showing the pendant in flight and telling the story of its journey to the edge of space.