Crystal Entity in an Interstellar Oil Painting

An ethereal crystal entity floating inside a starship cabin. Oil painting style with rich, textured brushstrokes. The crystal shimmers with prismatic light, facets catching blue, green, and gold reflections. Subtle glow illuminates polished metal walls, glass portholes revealing a distant nebula. Dramatic Rembrandt-like lighting, deep shadows, and luminous edges around the entity. Futuristic consoles with dim holographic readouts, a calm, otherworldly atmosphere. The scene blends classical oil technique with sci-fi design, creating a serene, mysterious cosmic portrait.