LONGWIN Huge 150mm (5.9 in.) Crystal Polyhedron Diamond Paperweight Wedding Home Decoration Centerpieces(Clear) Material:k9 Crystal Best Material MATERIAL: K9 Crystal which offers a high refractive index and high clarity, and lead-free. SPECIFICATION: Diameter of the diamond: 150mm(5.9"), diameter of the base: 70mm(2.75"). DECOR ORNAMENTS: Great for wedding party centerpiece,office and home decoration. GIFT IDEA: Ideal as a birthstone for someone's birthday present, also recommend as mother's day gift, valentine's day gift, festival gift. MAKE RAINBOW: Faceted diamond will appear beautiful rainbow sports under the sunshine.