Anatolian and Persian carpets

The difference between Anatolian (Turkish) and Persian carpets is today largely one of tradition.
Typically, a traditional Persian carpet is tied with a single looping knot (Persian or Senneh Knot), while the traditional Anatolian carpet is tied with a double looping knot (Turkish or Ghiordes Knot). This means that for every 'vertical strand' of thread in a carpet, an Anatolian carpet has two loops as opposed to the one loop for the various Persian carpets that use a Persian 'single' knot. Ultimately, this process of 'double knotting' in traditional Anatolian carpets results in a slightly more block like image compared to the traditional 'single knotted' Persian carpet. The traditional Anatolian style also reduces the number of Knots per sq cm.[citation needed]
Today, it is common to see carpets woven in both Turkey and Iran using either of the two knot styles. When comparing carpets the only way to definitively identify the knot used is to splay open the pile by bending the rug against itself and looking at the base of the knot.
See also: Knots per sq cm