{
  "mode": "built-in imagegen",
  "prompt": "Use case: ads-marketing. Create one refined photographic campaign image for fictional jewelry house ORA, landscape 1536x1024. The input image is a product-design reference, not an image to retain as the background. Show exactly this emerald-cut green gemstone ring worn naturally on the ring finger of one adult woman's elegant, anatomically correct hand: yellow gold slim band, FOUR corner claws, three small white diamonds on each shoulder, same rectangular horizontal green stone, realistic finger-scale ring, not an oversized prop. Fashion still-life crop of the hand, wrist and a little forearm, no face needed. The wrist enters from bottom right, relaxed gently curved fingers angled toward upper center, with the ring clearly visible on the right half of the frame. Deep forest-green smooth fabric backdrop with subtle broad folds and soft out-of-focus background. A little ivory shirt cuff at the wrist. Left 40 percent has calm very dark forest-green negative space for website text to be added in code. Large soft side light reveals true pores, restrained highlights, gold polish and transparent emerald step-cut facets. Tasteful fine jewelry editorial photography, beautiful natural skin detail, realistic hand anatomy and all five fingers, no plastic skin, no generic glamour effects, no sparkles, no typography, no watermark, no extra jewelry. This is a fictional concept campaign; keep the recognizable same ring design across the reference and generated wearing photograph."
}