پرامپت تبلیغاتی شمش طلای خالص میان سنگ های تیره

Create a premium luxury product advertisement featuring a single upright gold bullion bar standing among rugged black volcanic rocks. The gold bar is centered and dominates the composition, with a highly realistic polished metallic surface, warm golden reflections, rounded beveled edges, and precise engraved typography that reads exactly: "999.9", "FINE", "GOLD", "NET WT.", and "1000g". Use a dramatic low-key studio lighting setup with a soft warm key light from the upper left, subtle rim light along the right edge, deep shadows, and controlled highlights on the metal. The background is nearly black with a faint charcoal gradient and atmospheric depth. Detailed rough rock textures fill the foreground and surround the base of the bar. Vertical composition, centered product framing, premium jewelry and precious metals advertising aesthetic, photorealistic commercial photography, cinematic contrast, sharp focus on the gold bar, realistic reflections, high detail, clean composition, no people, no hands, no extra objects, no logos, no watermark, no additional text, no distorted lettering.