Drifting seed points partition the field into Voronoi cells, each shaded like a cut gem: a radial fan of flat facets around its seed, a bright core sparkle, and a darkening toward the cell edges taken from the gap between the nearest and second-nearest seeds. Thin near-white borders trace the crystal joints over a cool indigo-cyan-violet palette that shifts per cell, so the whole lattice shimmers as the seeds wander. Hover to drive an extra seed that carves its own cell under the cursor, scroll to change cell density, and press to drop to a wireframe-only view.