Plastic buttons with black and white accents, they have a glossy finish. These have been stored at home and kept in a button box, so there are no major scratches or stains, but please understand that there may be oversights. Diameter: Approximately 2.3cm Thickness: Approximately 2mm Please purchase only if you are satisfied and understand the product after viewing the photos. There may be minor scratches, but they are not noticeable. No claims and no returns, please.