Macro close-up of a fractured obsidian geode splitting open in infinite void, raw amethyst and citrine crystals transformed into flowing liquid chrome mercury with iridescent oil-on-water rainbow oxidation spreading across frozen crystalline facets, razor-sharp metallic mineral deposits catching prismatic light, suspended quartz dust particles dancing in dramatic volumetric rim light, deep void background with scattered copper and silver ember particles, hyperrealistic 8k render, volumetric lighting carving luminous geometric edges from darkness