Macro close-up of an antique mechanical clock gear mechanism suspended in infinite obsidian void, brass cogwheels transformed into flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen metallic teeth, razor-sharp crystalline gear ridges catching prismatic reflections, suspended copper and silver filings dancing in dramatic volumetric rim light, deep void background with scattered amber ember particles, hyperrealistic 8k render, volumetric lighting carving luminous mechanical edges from darkness