Sirjan lies in the west of Kerman province, in south-central Iran, roughly 170 km west of Kerman city on the high plateau that runs up to the border with Fars. The town grew where it did because of the road. The caravan route from Fars and the Gulf ports reached Kerman through Sirjan, and from Kerman goods carried on towards Khorasan and India. That traffic between Iran and India made the district prosperous long before anything was woven in it for sale. Weaving here began as household and tribal work rather than as an industry, and that origin still shows in the rugs.

For most of the nineteenth century and the early twentieth the town was called Sa'idabad, and only later took back the older name of Sirjan, which belonged to the medieval city that served as the seat of the Kerman region before Kerman city eclipsed it. That change explains a small puzzle in the rug literature: Sirjan appears late as a rug label, while the weaving it describes is a good deal older. Pieces from that earlier period reached the market under the Sa'idabad name, or, far more often, simply under the name of the tribe that made them.

Those weavers are the Afshar, a Turkic tribal confederation resettled into the Kerman region from north-western Iran, traditionally dated to the Safavid periodSee in the carpet dictionary. Some of their descendants remained pastoral, moving with their flocks between summer and winter pasture; many settled into the villages of the western half of the province, around Sirjan itself and towards Baft, Shahr-e Babak and Rafsanjan. Sirjan was where their work was collected, graded and sold on, so the town's name ended up on rugs woven for miles around it. A Sirjan rug is named after a market rather than a workshop, which is why two pieces carrying the label can differ considerably.

Kerman city, away to the east, produced something entirely different: urban workshop carpets, woven from cartoons drawn by professional designers, on cotton foundations, in fine cork woolSee in the carpet dictionary taken from the inner fleece, with palettes of fifteen to thirty colors mixed by master dyers and among the highest knot densities in Persia. Sirjan sits at the opposite pole of the same province. None of that workshop apparatus applies here, and a description that lends Sirjan the refinement of Kerman city is describing the wrong rug.

Country weavers in the district worked without cartoons. Patterns came from memory and were handed down, which is the structural reason the designs are geometric: straight lines, repeated panels and stepped outlines survive being carried in the head, where a curved floral spray does not. The repertoire draws on what the weavers lived among, animals, birds, household objects, plants and trees, alongside botehSee in the carpet dictionary forms, rosettes and diamond lattices. Medallions do appear, but they are arrived at geometrically, built from hooks and steps rather than drawn as a curve. No two pieces repeat exactly, and small asymmetries are a sign of the method rather than a fault.

Colors run to jewel tones. Deep red and dark navy grounds are the most common, worked against saffron gold, indigo, green and undyed ivory, and an older piece will often show two or three shades of the same red where the weaver moved from one dye lotSee in the carpet dictionary to the next. That banding is normal in woolSee in the carpet dictionary dyed in small batches and is generally read as evidence of hand-dyeing rather than as a flaw. Contrast tends to be strong throughout, because these designs depend on clean outlines rather than on shadingSee in the carpet dictionary.

Wool came from the weavers' own flocks. Tribal wool of southern Iran is a hard weaving wool, thicker and less obliging on the loomSee in the carpet dictionary than the fine fleece a city workshop buys in, and it makes a rug that wears very well while still feeling soft underfoot. PileSee in the carpet dictionary is usually medium rather than deep. Older pieces from the district are typically built on a wool foundationSee in the carpet dictionary, warp and weftSee in the carpet dictionary alike, which is the earlier tribal habit; cotton warps became common as production settled into the villages and cotton became easy to buy.

Both knot types are found in the district, the symmetric and the asymmetric, and the count is moderate and somewhat irregular, as hand-spun woolSee in the carpet dictionary on a simple loom makes it. Fine drawing is not the point of this weave. A Sirjan rug is built to be walked on, and the combination of hard-wearing wool, medium pile and a robust structure suits hallways, kitchens and rooms with real traffic, where a finely knotted city carpet would be wasted. Old pieces vary, so judge by the handle: it should feel dense and pliable rather than thin and papery.

Size is decided by the loom. A group on the move cannot carry a large one, so the district's output runs to small and medium formats, roughly 1.2 by 1.8 and 1.5 by 2.1 metres, together with runners and the small weavings of pastoral life such as bags, saddle covers and cushion faces. The habit outlasted the tents: villages that could have built wider looms went on weaving the sizes the tribe had always woven. Genuinely room-sized pieces from the district are uncommon, and the older the rug the less likely it is to be large. Anyone after a single carpet to fill a big sitting room is usually better served elsewhere; the strength here is the smaller piece.

Flatweaves are the other half of what the name covers. Sirjan has a long sumak and kilimSee in the carpet dictionary tradition sold through the same bazaar: kilim woven flat with no pile at all, and sumak built by wrapping the colored weft around the warps, which gives a ribbed, almost embroidered face and a heavier, denser handle. Both were made for the household before they were made for sale, by the same hands and on the same looms, so a flatweaveSee in the carpet dictionary from the district shares the geometry and the palette of its pile rugs rather than standing as a separate tradition. European demand from the nineteenth century onwards drew Kerman province into export weaving, and country goods from Sirjan travelled that same channel.

A Persian rug is an Iranian rug — a rug hand-knottedSee in the carpet dictionary in Iran — and the tradition behind it is the oldest documented anywhere. The earliest surviving carpet, the Pazyryk rugSee in the carpet dictionary, was found preserved in a frozen burial mound and dates to the fifth century BC — roughly 2,500 years ago — and it is already accomplished work, not a beginner's craft. What began as warm, hard-wearing floor coverings for tribal households grew, over those centuries, into the art form that every other rug-weaving country has borrowed from.

Two later chapters shaped what a Persian carpet looks like today. Under the Safavid dynastySee in the carpet dictionary, from 1501 to 1732, the court promoted weaving alongside painting and calligraphy, and the workshops of Tabriz, HeratSee in the carpet dictionary, Kashan and Kerman produced the masterpieces that now sit in museums. This is when the great central medallionSee in the carpet dictionary appeared, and when designs grew elaborate enough that a separate designer — often a miniature painter — drew the pattern onto a cartoon for the weaver to follow. The second chapter came in the nineteenth century, under the Qajar dynastySee in the carpet dictionary, when production reached its historical peak, exports to Europe and America boomed, and the workshop industry whose descendants still weave today took its modern shape.

The trade sorts Persian rugs into three families. City rugs — Tabriz, Kashan, Kerman, Nain, Isfahan — are woven in workshops from a drawn design, carry the highest knot densities and come in the widest range of colors, sizes and patterns. Village rugs such as HerizSee in the carpet dictionary, BakhtiariSee in the carpet dictionary and KarajaSee in the carpet dictionary sit in between, mostly geometric and largely woven from memory. Tribal rugs — Baluch, TurkomanSee in the carpet dictionary, QashqaiSee in the carpet dictionary, each named after the people who weave it — are made on small portable looms, so they run smaller, and their bold geometric drawing comes from the weaver's own head rather than from paper.

The design vocabulary draws on a deep stock of motifs: Shah AbbasiSee in the carpet dictionary palmettes, flowing arabesques, the small repeating Herati patternSee in the carpet dictionary, medallions, garden and tree-of-life compositions. These combine with regional habits into styles a practised eye can place at a glance, from the bold geometric medallions of Heriz to the fine curvilinear florals of Isfahan.

The classic palette is built on natural dyes: madderSee in the carpet dictionary reds, indigo blues, saffron yellows and the soft whites of undyed woolSee in the carpet dictionary, settled into combinations refined over centuries. Natural dyes age gracefully, mellowing into the patina that older rugs are prized for, and slight shifts of tone between dye batchesSee in the carpet dictionary — the effect called abrashSee in the carpet dictionary — are a mark of small-batch natural dyeing, not a flaw.

The pileSee in the carpet dictionary is almost always woolSee in the carpet dictionary, and in a Persian wool rug the wool itself decides much of the quality. The best fleece comes from high-altitude flocks, where it grows thicker and richer in natural oils; spring-sheared wool beats the autumn clip, and hand-spun yarnSee in the carpet dictionary gives a finer, softer thread than machine spinning. Fine pieces add silk highlights to a wool pile, and at the very top sits the Persian silk rug, woven in pure silk. Foundations are usually cotton in city weaving, wool in tribal and older pieces, silk at the very top of the range.

Every knot is tied by hand, one at a time, in one of two forms: the asymmetric Persian knotSee in the carpet dictionary, usual in central and eastern Iran, or the symmetric Turkish knotSee in the carpet dictionary, common in the north-west ever since Seljuk weavers introduced it in the eleventh and twelfth centuries. A large rug holds in the region of two million knots and can occupy a weaver for about a year.

Knot densitySee in the carpet dictionary is the figure newcomers fixate on, and the finest silk-foundation pieces do reach as much as 1,000 knots per square inch. But densitySee in the carpet dictionary only matters as far as the drawing demands it: a curvilinear Isfahan needs a fine weave to stay sharp, while a geometric Heriz is famously durable at a modest count. Material, symmetry, color harmony and condition say more about quality than any single number.

Persian carpets settle into modern rooms as naturally as classical ones, as a focal point in a living room, a foundation under a dining table or a quieter accent in a bedroom. Care is undemanding: gentle vacuuming without a rotating brush, an occasional turn for even wear, and a professional wash about every five years — sooner in a hallway or entrance, less often in a quiet room.

A hand-knotted Persian rug tends to outlast its owners. Pieces a century old regularly survive in fine condition, their colors settled and their pile supple, often looking better than when they left the loomSee in the carpet dictionary. A well-chosen, well-kept rug holds its worth and passes down as a family heirloom rather than being replaced — which is precisely what the knots, the wool and the dyes were always for.