Beautiful polished bronzed-silver steel pendant, shaped like a Sand Dollar with beautiful spiraling symmetric tunnels. This mind-bending mathematical surface is intriguing to look at and makes an interesting conversation starter.

Inspired by the Jacob Hamblin Arch, this piece features 5 tunnels that converge at the center, achieving perfect symmetry on both sides. Flip it over, and the tunnels become the arches and the arches become the tunnels, revealing astonishing symmetry.

Measures 1 3/4" diameter. Designed by math artist Paul Nylander. 3D printed from polished bronzed-silver steel using Selective Laser Sintering (SLS).