Antique Caucasian Shirvan Rug Circa 1880. These types of antique Caucasian rugs were woven in the eastern part of the region, mostly along the west coast of the Caspian Sea and show in the design, the ethnic style associated with Caucasian pieces. The central blue field with a wonderful array of different designs, surrounded by an ivory border itself enclosed by multiple guard borders creating a distinctive and extremely interesting piece.