Beautiful two-hole shell buttons with iridescent reflections. 18mm, 7 pieces. 1 each of green, brown, black, and purple buttons. 3 buttons with patterns on a black base, which appear to be mussel shell. Due to the natural materials, there are individual differences in thickness, color, and flatness. Some may be warped. These are unused but have likely been stored for about 10 years. For those who understand this. I am also selling other buttons. Thank you for looking.