Macro close-up of a single human eye suspended in infinite obsidian void, dark iris transformed into flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen metallic cornea, razor-sharp crystalline tears catching prismatic reflections, suspended metallic dust particles dancing in dramatic volumetric rim light, deep void background with scattered copper and silver particles, hyperrealistic 8k render, volumetric lighting carving luminous organic edges from darkness