Mind's Soul Gem: Concept Art Inside the Brain

A hyper-detailed concept art piece showing the inside of a human mind as a bioluminescent inner world. A translucent silhouette of a head frames a swirling cosmos of thoughts, with a radiant soul gem floating at the center of the brain. The gem is a crystal orb with facets that glow with inner fire, surrounded by a halo of light and anchored by delicate threads of thought to memory shards and neural rivers. The mental landscape features floating islands, wispy nebulae, rivers of light, and geometric runes, all rendered in painterly digital style. Cinematic lighting, soft volumetric glow, dust motes, prism effects, and glassy reflections, high detail, 4K. Color palette blends deep blues and purples with gold and gem-like whites.