Smooth, sleek, natural horn button is hand-carved and hand painted, so, happily, they won't exactly match. 1-1/2" diameter, high quality 1/8" thick, durable but not too heavy. Very unique, cool button that reminds us of Mudcloth from Africa. Quite concave/scooped bowl shape. Rich, dark, pure black, water buffalo horn. 

The backs are smooth black. Two holes.