It's our most beautiful space pendant ever: The Sterling Silver Opal. On Sept. 5, 2021, the students of Earth to Sky Calculus launched one to the stratosphere onboard a cosmic ray research balloon. At the apex of the flight, it floated 103,018 ft high, above 99.7% of Earth's atmosphere.


Opals are cousins of moonstones; in fact they look the same in low light. But when bright sunlight strikes an opal, something special happens. A spray of color emerges from the stone. Indeed, this happened while the stone was in the stratosphere.


Wrapped in a sterling silver Celtic love knot, the opal is suspended from a matching 18-inch chain with a 2-inch extender.  Each pendant comes with a greeting card showing the opal in flight, telling the story of its trip to the edge of space and back again.


All sales support the student's cosmic ray research program.


Sterling Silver Opal Pendant