Перламутровая раковина — вариант 1

Use case: product-mockup. Use the supplied image as the exact reference. Create one isolated transparent PNG of a single large spiral sea shell with a pointed coiled spire, ridged body, and wide flared opening on the right. Explicit color: pearly ivory and pale peach, warm blush-coral shading in the ridges, luminous nacre highlights. Pose and angle: shell resting diagonally with the spire pointing upper left and the opening facing right/front, same three-quarter view as reference. Framing: close-up product photo, entire shell centered and filling about 75–80 percent of a square canvas with clear transparent margin. Preserve glossy nacre, raised ribs, natural shell detail and soft upper-left studio lighting. Make this variant moderately distinct with stronger alternating pale-peach and warm rose bands along the ridges while keeping the shell recognizably the same species/form. True alpha transparency around and inside the opening; no sand, water, floor, backdrop, external shadow, text, logo or extra objects.