Natural horn buttons, approximately 10mm across and 2mm thick. (Matching 13mm buttons shown in the 2nd photo are available separately.) These are a mix of caramel brown and coffee, with some paler markings which are a natural part of the horn material. The buttons are convex on the back and concave on the front. The backs are more polished than the fronts, which look semi-matte.
I take care to pick the best available buttons for each order but, since horn is a natural material, there may be slight imperfections and variations in colour. Please wash with care - avoid using acidic cleaners and high heat.