A square 1024x1024 professional audiobook cover art with a minimalist yet evocative style. The central image is a collection of rough, ancient-looking stones, arranged in a subtle, almost organic spiral pattern. One stone, slightly more prominent, seems to emit a faint, ethereal glow from within, suggesting an inner wisdom or prophecy. The background is a gradient of deep, twilight blues and muted purples, transitioning into a smoky, atmospheric mist that wraps around the stones, creating a sense of mystery and profound depth. The lighting is dim and moody, with soft highlights catching the textures of the stones. The overall mood is one of ancient knowledge, intuition, and quiet contemplation. The aesthetic should be high-quality digital painting, reminiscent of magical realism or dark fantasy art.