Quite simply, the increased the volume of hand-tied knots per sq. inch (KPSI) the finer the piece: a hundred and fifty knots for each sq. inch is average;”great” rugs could have a knot count of five hundred or maybe more. This includes a gorgeous Belouch prayer rug, with the Herat http://prayer-rug66739.blogs-service.com/19717687/the-basic-principles-of-rug-mat