PREMIUM QUALITY CRYSTAL: Our Hanging Faceted Prism Balls are made of Top K9 Crystal Glass, not acrylic, great weight cut glass crystal balls, super sparkly and flawless. Faceted crystals prism ball makes the most beautiful color, throws rainbows all around the room when hang in a window, brilliant in the sun. PERFECT CRYSTAL ORNAMENTS: Our prism pendant are nice for home office garden window, feng shui crystals, chandelier crystal parts, wedding decoration, christmas tree decor and any crystal projects. EASY HANGING: With a hole drilled at the top, hanging optical glass crystal ball prisms in the window and when the sun shines it it makes the most beautiful color.