Natural shell buttons, approximately 22.5mm across and ranging from 1mm to 2mm thick. As you can see, these are quite irregular. If you have a preference as to colour, feel free to leave a note at check-out; otherwise, I'll pick a variety.
I take care to pick the best available buttons for each order but, since shell is a natural material, there may be slight imperfections and variations in colour. Please wash with care - avoid using acidic cleaners and tumble-drying.