Carpets from ARAK (Sultanabad) have excellent visibility. ARAK carpets come in a variety of styles and they are among the most gorgeous carpets. They are becoming the most sought after carpet on the western market. ARAK carpets go well with any decor.
Quality: ARAK carpets are of excellent quality.
Size & Shapes: ARAK carpets come in different sizes, but the majority of them are mid-size (4 x 6 to 8 x 10 feet). You can also find large rugs up 10 x 18 feet.
Dark red, blue, soft green and ivory are the principal colors used.
Soft wool; thin, very well textured pile.
Although not uncommon in older or antique pieces, silk pile and silk foundations are rarely seen in new ARAK carpets. The warp is mostly cotton; the weft either cotton or wool. Most often cotton, but sometimes goat hair is used for the foundation. The wool of the rugs is hand spun, usually from the weaver's own sheep.
The rugs are woven using asymmetrical Persian knots. You should check the back of the carpet, because the quality of the carpet depends upon the number of knots, which varies, but averages around 120KPSI(30 RAJ).
There are many different grades of rugs made in this region, ranging from medium to fine. Carpets and rugs from ARAK are beautiful and there is very high demand for old ones. They are more expensive than similar carpets from the surrounding area. Expect to pay $5-$12(PSF) for a carpet from ARAK.
More info on ARAK rugs at Jozan.net.
More info on ARAK rugs at JBOC's Notes.