Such rugs do not wear well and have no resilience. The preparation of the wool has much to do with the appearance of the final product. Proper shearing guarantees the maximum length of fiber. Then the fibers are washed, sorted, teased, fluffed and combed to be ready to be spun on a spindle or spinning wheel. After the spinning process the year can be dyed.
Most rugs contain either natural or synthetic dyes.
Natural dyes are made from vegetable or mineral sources. Synthetic dyes are made from either aniline or chrome. Saffron produces the brightest and also the most expensive yellow. Sumac, turmeric and pomegranate also supply various yellow dyes. Green can be made from a dying of indigo followed by a bath of yellow.