Macro close-up of an opalescent nautilus shell suspended in infinite obsidian void, flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen spiral chamber walls, razor-sharp crystalline nacre layers catching prismatic reflections, suspended metallic pearl dust particles dancing in dramatic rim light, deep void background with scattered copper and silver particles, hyperrealistic 8k render, volumetric lighting carving luminous organic edges from darkness