Macro extreme close-up of a nautilus shell suspended in infinite obsidian void, logarithmic spiral chamber transformed into flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen shell ridges and nacreous chambers, razor-sharp growth lines catching dramatic prismatic rim light, suspended pearlescent particles dancing in volumetric glow, deep void background with scattered mother-of-pearl and silver metallic fragments, hyperrealistic 8k render, volumetric lighting carving luminous biological cathedral edges from darkness