Material: Plastic From the left, 1st and 2nd columns: 6 pieces (diameter 1.5mm) Center: 2 pieces (diameter 2.0mm) From the right, 2nd column: 3 pieces (diameter 2.5mm) Right: 1 piece (diameter 3mm) The white buttons' color is closer to the actual color in the second photo. These are items owned by my father, who worked at Versace 30 years ago. Please understand that these are used items.