Good wool captures the light and diffuses it among its fibers. Using a good wool carpet over the course of time gradually polishes the wool and the natural oils come to the surface lending a wonderful sheen. In fact, an older rug sometimes looks as though it is made of silk instead of wool. Rugs of wool are more durable and wear longer than synthetic fabrics. Wool is more resilient, cleans better and stays clean longer.
Dead wool taken from slaughtered animals by chemicals is dry, brittle and abrasive.
The colors are cloudy, light is reflected off the surface of the wool. 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.