#335Stepped Bismuth Crystal

A hopper crystal of bismuth: six box slabs stacked into a spiralling ziggurat, each terrace narrower and twisted a little from the one below, then domain-warped so the risers wobble like a real grown crystal. Every hit is sphere-traced; the height of the surface sets an optical thickness that drives genuine thin-film interference, rebuilt on the Oklab ring for the metal’s rainbow-on-black oxide. The colour flows up the terraces over time and thin black lines mark each step edge. A filmic knee caps the sheen. Hover to tilt the stack, scroll to spin it, press to speed the colour flow.