An awe-inspiring crystal sky castle floats majestically in the endless expanse of a glittering universe, its translucent spires refracting starlight into cascading rainbows that illuminate the surrounding void. The castle appears as though sculpted from pure diamond and quartz, its surfaces shimmering with hues of sapphire, amethyst, and gold. Intricate crystalline bridges and delicate balconies extend outward, each edge glowing faintly against the cosmic backdrop. Surrounding it, nebulae swirl in vibrant colors of magenta, teal, and deep violet, with countless stars scattered like diamonds on velvet. Trails of cosmic dust spiral gently around the castle, giving it an ethereal, otherworldly aura. The castle's radiant glow harmonizes with the celestial scene, as though it were born from the heart of a supernova, a beacon of timeless magic in the infinite cosmos