Cryogenic Rune Stone in a 3D Chamber

Hyper-detailed photorealistic 3D render of an ancient rune-stone sealed inside a cryogenic chamber. The stone is roughly hewn, about the size of a human hand, with intricate Norse-style runes carved around its edges that glow cobalt-blue. It sits on a frosted pedestal encased in a transparent ice-crystal slab; frost rims the edges and icicles hang from the corners. The chamber is a sci-fi vault with brushed steel walls, coolant tubes, cables, and dim control panels with amber LEDs. Pale-blue cryogenic vapor swirls through the air; condensation beads on the glass; volumetric light shafts pierce the haze. The rune-glow reflects off the ice, the stone shows subtle subsurface scattering, and micro-scratches and reflections enhance realism. Lighting is cold blue with a soft ambient glow from the glyphs. Camera angle is cinematic, slightly low and close, with shallow depth of field to emphasize the rune-carved surface; render in 8k with photorealistic textures and PBR materials.