A 3d realistic image of a glass skull, infused with swirling blue light that casts an ethereal glow and accentuates its transparent layers. The skull appears to be suspended in a void-like black background, creating a striking contrast. Tiny bubbles and imperfections within the glass add an organic texture, enhancing its realism. Rendered with the high-performance Octane engine, the image possesses a mysterious aura, with subtle reflections and refractions giving it a sci-fi and otherworldly vibe.