If you picture a Persian carpet without picturing a specific rug, you are probably picturing Kashan conventions: a formal central medallion with pendants, dense floral infill, a deep madder red field, indigo corner spandrels, and a multiple-band border.
What defines it
- Knot
- Asymmetrical (Persian)
- Density
- Typically 150–400 KPSI
- Foundation
- Cotton warp and weft; silk in fine examples
- Palette
- Madder red, indigo blue, ivory
- Design
- Central medallion, formal and symmetrical
Kashan is a workshop tradition, which means cartoon-woven: the drawing is symmetrical across both axes and consistent across the whole field. The wool is the other signature — Kashan is known for a soft, high-lustre wool that takes dye deeply and develops a distinct sheen with age.
Judging one
Density first. A Kashan below roughly 150 knots per square inch is commercial production; the design will still read but the drawing will be simplified, with fewer colours and coarser outlines. Above 250 you are in serious territory.
Then wool. Kashan's reputation rests on wool quality, so this is where corners get cut in cheaper production. Good Kashan wool feels dense and slightly cool, springs back immediately when compressed, and has visible lustre when you view the pile from a low angle. Dry, matte, slightly brittle wool on a rug sold as Kashan is a downgrade signal regardless of knot count.
Then dye. The classic Kashan red is madder, and it ages towards a softer brick. An aggressive, flat, slightly blue-toned red that is identical at the base and tip of the pile is synthetic and later. Neither is disqualifying — it dates the rug.
A quick sanity check
Fold the rug back along a knot row and look at the base of the pile. Colour that is markedly richer at the base than at the tip means the surface has faded naturally over a long period. Uniform colour top to bottom means either a young rug or a chemically treated one.
Where it sits in the market
Kashan is one of the more liquid Persian names — it is recognised, it is stocked, and there is a real secondary market. That works both ways: attributions to Kashan are applied loosely, because the name sells.
The steps in identification settle construction independently of the label. For where the price should land, see what Persian rugs are worth.
Living with one
Kashans are dense and heavy, and they wear extremely well in a room-size format. The formal drawing sits comfortably in a traditional interior and, in the deeper reds, surprisingly well against modern furniture — the saturation does the work.
The one practical caution is light. A madder red field fades visibly and unevenly if one half of the rug gets afternoon sun. Rotate it twice a year, as covered in caring for Persian rugs.
Common questions
What is a Mohtasham Kashan?
Kashans attributed to the late-nineteenth-century workshop associated with Mohtasham, distinguished by exceptionally soft, lustrous wool — often described as manchester wool — and very fine, restrained drawing. The attribution is applied generously in the trade and genuine examples are rare.
Why are some Kashans so much cheaper than others?
Kashan has produced at every grade for over a century. A 1920s wool Kashan at 300 knots per square inch and a 1990s commercial Kashan at 130 share a design language and nothing else. Density, wool quality and dye evidence separate them.