Natural sea glass. Please refer to the photos for the size. This 500g lot of cute sea glass includes some pieces with a slight sparkle. The colors are a mix of white, light blue, gray, brown, etc. I have collected beautiful pieces, but there may be some overlooked imperfections. Please understand this before purchasing. While there are no sharp edges, please be careful when handling to avoid injury. Shipped via Yu-packet Mini. We are not responsible for any shipping-related issues.