| Knots Per Sq Cm |
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For two carpets of the same age and similar design, the one with the higher number of knots will be the more valuable. With more than 30 knots per Square Centimeter (1 sq cm = approx. 0.155 Square Inch ), the whole carpet pattern will look much more precise and oblong, with no visible sharp stairs or Pixelization . The carpet's surface will also feel more solid and will give better protection against aging. A Persian Carpet with fewer than 30 knots per sq cm is generally considered an average to low quality carpet, while over 50 indicates a fine piece of work. Hand-tying of knots is a very labour-intensive task. An average weaver can tie almost 10,000 knots per day. More difficult patterns with an above average number of knots per sq cm can only be woven by a skilful weaver, thus increasing the production costs even more. It is not uncommon for a 3 M x 2 m carpet to take a single weaver almost a year to weave. |
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