Echo Valley 14450-2 Stardust Illuminarie Ornament, 3-1/2-Inch Diameter Hanging glass ornament Hand-blown, ensuring no two ornaments are exactly the same Weatherproof; can be used indoors or out Measures 3-1/2" in diameter Glow-in-the-dark. Note: For best results place ornament in a location where it will receive no competing light source at night. Glow will only occur within the green swirl portion of the globe and is comparable to the glow seen on a watch face piece. Glow will gradually fade over time.