NATIVE AMERICAN STERLING & LEATHER CONCHO BELT: Sterling concho belt by Navajo artist R Martinez has 7 large oval sterling conchos and 7 smaller butterfly conchos. Conchos can slide on 1.5'' wide black leather belt which is approx 44'' long. Larger conchos measure 2'' h x 3'' w and the smaller ones measure 2'' h x 1.25'' w.