Tips for Identifying a True Handmade Oriental Rug
Second, Look for unevenness in the colored knots on the back of the rug. You may see some areas slightly thicker than others.
Third, Now look at the front of the rug. Look at the design carefully. Very rarely will the design be exactly the same size and shape from one end to the opposite end of the rug. This is true mostly for Oriental rugs.
Fourth, You may notice slight color changes making thick or thin stripes in the rug. This is due to the change in the dye lots of the wool when weaving the rug and how the color of the wool ages with light and atmosphere. these color changes are commonly found in the background color of the rug. These color changes are called "abrash" are common and do not detract from the value of the rug.
Fifth, Sometimes there is a cloth tag stitched into one corner of the rug which says, "Made In Iran". You can be relatively sure that this is a a true handmade rug.
Sixth, Handmade rugs are almost always woven with wool pile. Machine made rugs are often made with a type of nylon or polyester pile.
Seventh, Machine made rugs are often made with a type of nylon and polyester pile, and are generally very uniformed in their weave. On the back of the rug, you may see white woven threads running from fringe to end fringe, or you may see no white threads at all. There is generally no unevenness in the weave or design, nor will you find abrashes in the color of the rug.