Siberian jade carving with leather sinnet work. This form, the circle
withing the square, is derived from the Congs made by the neolithic
peoples of ancient China. There are a variety of different lengths and
sizes found, up to almost 4ft! They have only been found buried with
the shamen, as opposed to something of eveyday ritual. Their purpose is
still a mystery though the general consensus is that the square
represents the earth and the circle, a symbol of heaven.