Versatile:great for chandeliers,lamp,suncatchers,crystal strands,art projects,jewelry making,garden project,weddings,baby rooms,Christmas tree decorations :Top excellent quality clear optical crystal glass,no plastic or acrylic,smooth and sparkling,no fading and blackening Make rainbows:throw the light or sunlight into rich and bright rainbows,make beautiful light refraction round the room Size:About 9cm long,50mm