Ghom (also spelled Qum, Ghum, Qom, etc.) silk rugs, other than being silk on silk, are some of the most elusive rugs to pin to any specific type of design. Some of the most distinguishing elements to these rugs are their high investment value, very thin pile height, and high knot count which is often between 400-860 kpsi, sometimes exceeding the latter for some very exceptional qualities.