Floating asteroid shard: jagged slate with a glowing icy quartz core, micro-detail (frosted chips, fine dust), no vegetation, studio HDRI with cool back rim, faint volumetric glow, centered, not touching frame, clean charcoal background, palette: teal-cyan + slate, mood: sci-fi relic, 85mm product shot, sharp focus, no motion blur, ultra crisp detail --chaos 8 --ar 3:4 --raw --profile u38j5dt --stylize 80 --v 8.1