Serapi rugs are to all intents and purposes a particular type or grade of what are called Heriz rugs - more specifically the highest grade in terms of weave, and very probably the oldest type in terms of age. Heriz carpets are generally coarsely woven. Since the early twentieth century they have come to make use of light blue cotton wefting. Serapis, in contrast, have a higher knot count, sometimes attaining 80 knots per square inch. Their backs are relatively flat, and they have ivory cotton wefting.
Great vegetable dyed silky soft wool pile over cotton warp and wool weft foundation.
The design contain allot of detail. Looking at the carpet from one direction you will notice birds feeding their chicks in their nest and from the opposite direction you will notice the Botteh design.
The rug's color shades change throughout the rug.This affect is better known as Abrash.