深绿丝绒托起的祖母绿钻石项链

A Cannes-level luxury high-jewelry campaign poster for the fictional maison NOURÉLLE, featuring a hyper-real emerald-and-diamond statement necklace on a deep emerald velvet bust as the absolute hero. The image must merge regal atmosphere, collector-grade material precision, and curator-level restraint. Preserve the core structure: a centered bust on a stone pedestal within a warm palace interior, with soft draped textile in the foreground, gentle atmospheric haze, carved architectural depth, and refined typography in the upper negative space. The necklace must remain the undisputed focus.

Use a vertical poster format, straight-on to slightly low angle, with a centered hero axis and strong symmetry softened by natural asymmetry in fabric folds and haze. The emerald velvet bust occupies the central field with commanding clarity, standing on a pale carved stone pedestal. The lower foreground holds a translucent gold-beige embroidered textile flowing around the pedestal base in controlled couture folds. The background is a softly blurred palace-like interior with arched recesses, carved wall relief, and a monumental column on the right edge, all secondary. Preserve generous breathing room above the bust for brand mark and headline typography.

The hero necklace is an ultra-premium couture high-jewelry piece in polished champagne-white gold, composed of dense diamond rows with immaculate articulation and two vivid rectangular emeralds near the upper left and right collar line as chromatic anchors. The necklace converges into a refined central drop with layered articulated strands and a slim geometric tassel fall, elegant and structurally precise. Diamonds must read as individually resolved stones with controlled scintillation and crisp facets. Emeralds must feel deep, saturated, glassy, and noble, with clean table reflections and believable internal depth. The metal must feel dense, luxurious, and impeccably finished.