The stone can absorb light to glow at dark repeatedly, safe, environmental and energy-saving to be as decoration of fish tank, garden, pool, etc. Specifications: Material: Bare stone Color: Blue, Green (optional) Item Size: 10-30mm / 0.39-1.18in Item Weight: 100g / 3.53ounces Package Size: 120 * 80 * 30mm / 4.72 * 3.15 * 1.18in Package List: 1 * Bag of Luminous Stone
