Macro close-up of cracked ancient pottery vessel resting on desert sand, terracotta and sienna clay transformed into flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen ceramic fracture lines, razor-sharp metallic clay particles catching dramatic golden hour light, suspended copper dust dancing in volumetric rim light, warm amber and burnt orange palette against deep ochre sand, hyperrealistic 8k render, volumetric lighting carving luminous textured edges from darkness