The One-of-a-Kind Greiner Korker Hand-Knotted 3'7" x 5'7" Wool/Silk Ivory/Blue Area Rug is a known fact that the city has been one of the major and oldest producing centers of fine rugs for centuries. Without any doubt, the weaver of this product took so much pride in their work. They created a rug that is so fine, you can almost feel the quality just by looking at.