The Philosopher's Stone is a mystical, glowing artifact with a smooth, polished surface that emits a soft, golden luminescence. Its shape is a perfect, symmetrical sphere with intricate, arcane runes engraved around its circumference, shimmering with a faint magical energy. The stone's core appears to swirl with a liquid-like substance, giving it a dynamic, almost alive quality, while its exterior is encased in a delicate, metallic lattice that enhances its ornate and ancient appearance.