Pearl Vault

Designed by Dr. Bruce Patterson and produced by Pyrigan Puzzles, this compact 2" tetrahedral puzzle hides more than meets the eye. The striking tetrahedral puzzle locks a fake pearl inside four identical pieces. Your mission? Three-fold:

1. Release the pearl from the center,

2. Figure out the physics behind its surprising disassembly,

3. Reassemble—arguably the toughest step of all.

Built with precision and a nod to the laws of motion, this clever design rewards patience and curiosity. A memorable puzzle with a hidden twist that fans of mechanical challenges won’t forget.

Originally created as a gift for the 14th Gathering for Gardner (G4G14), a few extras remain for those intrigued by elegant motion and clever engineering.

Ideal for collectors, tinkerers, and anyone who enjoys puzzles that reward curiosity.