Iridescent Hopper-Form Bismuth Crystal with Stepped Geometric Growth (Made in New Zealand)

Bismuth is known for forming dramatic stepped geometry as it crystallizes, and this piece showcases that signature look with crisp right angles, deep recessed “steps,” and strong dimensional depth across the body. Under light, the specimen displays a high-impact rainbow sheen created by a thin surface oxidation layer—producing electric greens, warm golds, and flashes of magenta and blue that move across the terraces as you rotate it. The overall shape is bold and sculptural, with multiple stacked platforms and interlocking forms that give it a clean, modern aesthetic. This listing is for the exact specimen shown in the photos—an eye-catching display piece for collectors who love rare elemental minerals, geometric crystal formations, and intense iridescent color.