1-1/8" round button made from black resin with slices of tan bamboo embedded inside, so you see the 'side-sliced' view of the tiny bamboo stalk. Those are the spots. Randomly sized and spaced miniature bamboo spots. Tribal but refined; smooth edges and rich black with a bit of sheen. Shank back with small sewing hole. There is some variance; no two, naturally, are exactly alike.  $4.00 each