The Craft Map

Two kingdoms, two kiln districts, one revived industry, and a hard line between what is dug up and what is made now. The questions are the potter, the workshop, ancient or modern, and how the crackle was stained.

Sukhothai

The historic kingdom and kiln district of the north-central plain, with the sites at Si Satchanalai nearby producing the ware known in the trade as Sawankhalok: grey-green celadon on stoneware, incised and carved under the glaze, exported across island Southeast Asia in enormous quantity from the fourteenth century. Production ended centuries ago. The excavated kilns and the ruined cities are UNESCO-listed and are where the evidence for the whole industry sits, including kilns preserved intact enough to enter.

Chiang Mai

The Lanna capital and the centre of contemporary Thai celadon, where the twentieth-century revival is based and where working workshops produce tableware and decorative ware in the characteristic crackled green. It is also the hub of a wider craft economy in silver, lacquer, umbrellas and woodcarving in the villages around it. A record from here should name the potter and state plainly that the piece is modern work in a revived tradition.

Also on the Map

The maritime export networks that carried Sawankhalok to Java, Borneo and the Philippines and left it in graves and shipwrecks, which is where most surviving ancient pieces come from and why the collection does not handle them. The chronicle story of imported Chinese potters, which the archaeology does not support and which is nonetheless repeated in almost every shop and guidebook. And Korea's Goryeo kilns, this card's pair, where the same twentieth-century reconstruction happened from the same kind of excavated evidence. Potter, workshop, age, finish: four answers, and the third is the one that decides whether the object should be changing hands at all.

Two Kingdoms, Two Kiln Districts

Sukhothai emerged as a Thai kingdom in the thirteenth century in the north-central plain, and Lanna, with Chiang Mai as its capital, was a separate northern kingdom founded at much the same period and independent for centuries afterwards. They are frequently collapsed into one Thai story and they were distinct polities with distinct histories, which matters because the ceramics associated with each have different characters and different dates, and the trade routinely labels everything Thai.

The Origin Story and the Evidence

The tradition holds that King Ramkhamhaeng brought potters from China after a visit, and it appears in later chronicles rather than contemporary sources. Excavation of the kiln sites shows a sequence of local development, with earlier Mon and regional stoneware traditions, and technical borrowing from Chinese practice through the trade that was already flowing. The Chinese-potters story is a tidy explanation for something that happened untidily over a longer period.

Sawankhalok and the Export Trade

The kilns at Si Satchanalai, known in the trade by the name Sawankhalok, produced on an industrial scale. Their output moved through the maritime networks of Southeast Asia and turns up in graves, shipwrecks and settlement sites across Indonesia, Borneo, the Philippines and beyond, in quantities that make it one of the region's great ceramic export industries. Whole sunken cargoes have been recovered from the Gulf of Thailand and the Java Sea, some carrying tens of thousands of pieces from these kilns.

Underglaze Iron and the Other Ware

Celadon was not the only output. The same kilns produced a painted ware decorated in iron-brown under a clear glaze, with fish, flowers and bold linear designs, and it travelled the same routes. It is generally less prized than the celadon and it is technically the more revealing of the two, because brushwork survives on it and the hand of an individual painter can be seen where a monochrome glaze conceals everything.

The Patron Institution

Not primarily a court. Unlike Goryeo celadon, which was made for a palace, the Thai kilns were a commercial export industry serving overseas markets, and their scale reflects that. The courts of Sukhothai and Lanna consumed ceramics and Buddhist institutions commissioned architectural and ritual pieces, but the volume was driven by ships. That difference in patronage shows in the ware itself, which is robust, repeatable and made in quantity.

What Thai Celadon Looks Like

The classic Sawankhalok celadon is a grey-green or olive glaze over a greyish stoneware body, frequently with a deep crackle, and decoration is typically incised or carved under the glaze rather than inlaid: fish in the bottoms of dishes, floral scrolls, combed lines. The forms are plates, bowls, jars, bottles and covered boxes, and the bases usually show an unglazed foot with the marks of the stacking supports used in the kiln.

The Kilns Themselves

The kilns are worth understanding because they explain the volume. These were cross-draught brick structures built into slopes, large enough to fire hundreds of pieces at once, and the sites at Si Satchanalai contain them in numbers, along with the waste mounds of failed and broken ware. Excavation has recovered kilns preserved well enough to walk into. An industry of that scale in a pre-industrial economy required organised clay supply, fuel, labour and shipping, all of which had to be coordinated.

The Long Gap

Production declined and effectively ceased by the sixteenth or seventeenth century, as warfare disrupted the region and Chinese and later Vietnamese wares recaptured the export markets. What is made in Chiang Mai today is a twentieth-century revival, established in the modern period and drawing on the excavated material, and it is a genuine and skilled industry rather than an unbroken descent. The parallel with Korea is close and worth stating: two celadon traditions, two long silences, two reconstructions from excavated fragments.

Chiang Mai Now

The northern city has become the centre of contemporary Thai celadon, with workshops producing tableware, lamps and decorative pieces in the characteristic crackled green glaze for domestic and export markets. It is also the centre of a much wider craft economy in lacquer, silver, umbrellas, woodcarving and textiles, much of it concentrated in specific villages around the city, and the celadon sits inside that rather than standing alone.

Arts, Crafts and Living Ateliers

A Chiang Mai celadon workshop throws or moulds the body, biscuit fires it, applies the glaze by dipping or pouring, and fires again in reduction to bring the iron to green. The crackle is encouraged rather than avoided, and on some work a stain is rubbed into the crazing afterwards to make the network visible, which is a deliberate finishing step and should not be read as an accident of age.

Reading Modern Against Ancient

This distinction matters more here than almost anywhere, because genuine Sawankhalok pieces circulate. Ancient wares have burial and immersion evidence: mineral deposits in the crazing, dulled and abraded glaze, encrustation on unglazed areas, and the specific wear patterns of centuries in ground or seawater. Modern celadon is bright, evenly glazed and clean-footed. Artificial ageing exists and is usually overdone, sitting on the surface rather than in it.

The Foot and the Kiln Marks

Turn a piece over. Old Sawankhalok pieces were stacked in the kiln on tubular supports, and the resulting scars are characteristic: an unglazed ring on the inside of a dish where another piece stood, or spur marks on the base. Those marks are difficult to fake convincingly because they are a by-product of a stacking method rather than a decorative feature, and their absence on a supposedly ancient piece is a serious question to put to a seller.

The Crackle, Honestly

Crazing occurs because glaze and body shrink at different rates on cooling, and it can be encouraged by adjusting that mismatch. On modern Chiang Mai work it is a designed feature and frequently emphasised with a rubbed stain. On ancient pieces the crackle has taken up minerals from burial over centuries and the staining is uneven, deeper in some lines than others, and cannot be wiped out. Uniform staining across every line is a workshop finish rather than the effect of time.

Why Reduction Is the Difficult Part

As in Korea, the colour depends on starving the kiln of oxygen at the right stage so the iron in the glaze reduces to green rather than oxidising to brown. In a wood-fired kiln that means reading flame colour and adjusting dampers and stoking over many hours; in a modern gas kiln it is controllable but still a judgement. Two pieces from the same glaze bucket in different parts of the same kiln come out different colours, which is why matched sets are expensive.

Ateliers, Villages and Artisan Encounters

Chiang Mai has working celadon workshops open to visitors, most of them clustered outside the old city, and the surrounding craft villages cover silver, lacquer, woodcarving, paper umbrellas and weaving within a short drive. Sukhothai and Si Satchanalai, several hours south, are the historic kiln sites, with excavated kilns preserved under cover and a ceramics museum, alongside the ruined cities themselves, which are inscribed by UNESCO and repay a full day.

Why Shipwreck Material Is Refused

A large share of intact ancient Thai ceramics on the market came off wrecks, and much of that was recovered commercially rather than archaeologically, which destroys the context that makes a cargo informative: what was stacked with what, in what quantities, bound where. A scientifically excavated wreck answers questions about a whole trading system; a salvaged one produces saleable objects and a permanent gap in the record. The same objection applies to grave material.

Tourwit Editions and Provenance

Tourwit commissions new celadon from Chiang Mai workshops, paying before work begins and leaving the major share of what a piece realizes with the potter. The record names the potter and the workshop, states the glaze and firing, and says explicitly that the piece is a contemporary work in a revived tradition. Excavated Sawankhalok material is not handled, since much of it comes out of graves and shipwrecks.

Why These Works Matter

Two Asian celadon traditions, one made for a palace and lost with it, one made for ships and lost when the ships went elsewhere, both rebuilt in the twentieth century from excavated fragments. Reading them together makes the point that a ceramic tradition is only as durable as whatever was paying for it, and that neither refinement nor volume protects a craft when the demand moves.

The Sacred Year

Northern Thailand keeps a Theravada Buddhist calendar on a lunar reckoning, overlaid on the older Lanna year and on the agricultural cycle of the rice fields, and the north has its own festivals distinct from those of central Thailand.

The Rains Retreat

The three months of the monsoon are the period when monks remain in their monasteries, and it shapes the year around it: ordinations before it begins, a great merit-making occasion at its close when new robes are offered to the monastery by lay donors, and a general seriousness while it lasts. Fieldwork and monastic discipline align, since the rains are also when the rice is growing and nobody is travelling far from home.

Loy Krathong and Yi Peng

At the twelfth lunar full moon, small floats of banana leaf carrying candles and flowers are set on the water across Thailand, and in the north the Lanna festival of Yi Peng coincides, when paper lanterns are released into the sky. The two together are the region's great spectacle, and they are religious observances of merit-making and of letting grievance go, rather than a display arranged for visitors, though the lantern releases have been heavily commercialised in recent years.

Songkran and the New Year

The traditional new year in April is marked by pouring water over Buddha images and over the hands of elders as a blessing, which in modern practice has become a nationwide water fight of considerable enthusiasm. In the north it retains more of its older forms, including the cleaning of household images and the building of small sand stupas in temple grounds, decorated with paper flags.

Merit and the Commissioned Object

Theravada practice ties making to merit directly: paying for a temple building, a Buddha image, a set of roof tiles or a monk's requisites earns merit for the donor and for the dead they dedicate it to. That is a patronage system running through the whole society rather than through a court, and it is why Thai craft has always had a religious customer independent of who was ruling. Names of donors are frequently recorded on what they gave.

Etiquette and Presence

The head is the highest part of a person and the feet the lowest; do not touch anyone's head and never point your feet at a person or a Buddha image. Never climb on a Buddha image for a photograph, which is treated extremely seriously and has led to prosecutions. Dress covering shoulders and knees is required in temples and is enforced at the door. Monks do not accept anything directly from a woman's hand, and anything given is passed via a cloth or through a man.

The Lanna Difference

The north keeps its own forms. Lanna had its own script, its own dialect, its own calendar reckoning and its own temple architecture with distinctive stepped roofs and carved gable boards, and it was independent of Bangkok until the late nineteenth century. Northern festivals, northern food and northern craft are not regional variants of a Thai norm; they belong to a kingdom that was absorbed relatively recently and has not forgotten it.

The Calendar and the Craft

Buddhist institutions were substantial patrons of ceramics in the kiln period, commissioning architectural fittings, roof finials and votive material, and the monasteries remain significant customers for craft in the north today. But the trade that built the kilns was maritime and secular, and its calendar was the monsoon: ships sailed with the winds, and an export industry on the far side of a mountain range answered to a sailing season its potters never saw.