Eye of Sarnath (Archie)

The Eye of Sarnath is an extraterrestrial crystalline object. It falls onto in The Incredible Shrinking Turtles, Part 1 when an extraterrestrial spacecraft crashes onto Earth, and the  dive into a Central Park lake to save the pilot as the spacecraft crashes into the lakewater.

It is later used to power the Timeslip generator in the Future Shark Trilogy.