🧪 Jewelry Design Simulation

Jewelry design is applied geometry: a band is a solid of revolution, a decorative motif repeats under rotational symmetry, and a stone setting is chosen to sit in a deliberate proportion to its band. This simulator builds a real ring in 3D from those rules — adjust the band's cross-section, the symmetry count of its filigree motif, the center stone's size and the metal itself, and watch the band regenerate live along with true geometric readouts: swept metal volume via Pappus's theorem, estimated weight from the metal's density, an approximate US ring size, and the stone-to-band proportion ratio jewelers use to judge visual balance.