#37

Andronicos says that in a certain place in Spain one finds small, scattered stones which are polygonal and grow spontaneously. [...] I kept one to verify this myself and it gave birth at my place, so the story is not a lie. (Paradoxographus Palatinus, anonymous, 3rd century)
#37 is part of Rekveld's ongoing exploration of the propagation and diffraction of light through holes and grids.