This is a hand made Mosaic Wine Bottle Stopper with a bird motif. Each one is different and has a bird head in the center. They are a silver metal alloy with a nice weight. The tops unscrew and can be removed for cleaining. The mosaics are created with glass pieces (a mix of glitter glass, cystal glass, and recycled glass) and grouted with a polymer fortified grout for maximum durability.The grout is sealed. So, just wipe with a moist rag to clean.