Place

Jingdezhen

A thousand years of porcelain from one town, and the material Europe spent two centuries trying to reproduce.

A town in Jiangxi province that has made porcelain more or less continuously for over a thousand years. Its advantages were geological: local deposits of both kaolin and porcelain stone, the two components of a true porcelain body, together with wood for the kilns and a river to move the product.

The body fires to a white, translucent, vitrified ceramic that is impermeable without glaze — which no European ceramic achieved until the eighteenth century, and not for want of trying.

History

Imperial kilns from the Ming dynasty; blue-and-white porcelain, using cobalt imported from Persia, became one of the earliest globally traded manufactured goods and reached Europe, the Middle East and East Africa in quantity.

Europe's attempts to reproduce it produced soft-paste porcelain — a near-miss made from glass frit — for two centuries. Johann Friedrich Böttger achieved true hard-paste porcelain at Meissen in 1708 with a local kaolin, working under detention, and Saxony then guarded the formula as Venice had guarded its glass. The word kaolin comes from Gaoling, a hill near Jingdezhen.

Economic significance

It is the longest continuously operating materials industry with a single location and a single product anywhere on this site, and the clearest case of a material that could not be reverse-engineered from the object. Europe had abundant porcelain to examine and could not make it, because the answer was a raw material nobody knew to look for.

Medium confidence Weak evidence

How we know: checked recently · only one source, so there is nothing to cross-check it against · stated directly by the source.

How this connects

Where a connection has been confirmed by an outside reference, that reference is named beside it.

produces

Porcelain — material · more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone

Sources

Wikidata
Wikimedia Foundation · Creative Commons CC0 1.0 Universal (public domain dedication)
Material World
Our own writing

Where it comes from, and what it becomes

Follow Jingdezhen back to what it starts as, and forward into what it becomes. Each step is a documented one — a real route material takes, not a chain of inference.

Upstream — what it comes from

Jingdezhen → produces (more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone) → Porcelain → is produced by (at around 1,300 °C — the temperature European potters could not reach, which is half the reason porcelain stayed a Chinese secret for a thousand years) → Firing → takes as input (to 1200–1300 °C, which is the vitrification that separates it from earthenware — and it is a temperature rather than a recipe) → Stoneware → is sourced from (a clay that survives 1200 °C and above, which an earthenware clay does not) → Clay → is sourced from (clay is chiefly what feldspar becomes when it weathers) → Orthoclase
Jingdezhen → produces (more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone) → Porcelain → is composed of (kaolin, for the plasticity that lets the body be shaped before firing) → Clay → is sourced from (clay is chiefly what feldspar becomes when it weathers) → Orthoclase
Jingdezhen → produces (more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone) → Porcelain → is composed of (the filler that holds the shape while the feldspar is molten) → Quartz
Jingdezhen → produces (more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone) → Porcelain → is composed of (the flux: it melts at firing temperature and the melt dissolves part of the rest, which is what makes the body glassy and non-porous) → Feldspar
Jingdezhen → produces (more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone) → Porcelain → is produced by (at around 1,300 °C — the temperature European potters could not reach, which is half the reason porcelain stayed a Chinese secret for a thousand years) → Firing → takes as input (shaped and dried, then heated past the point where its minerals break down irreversibly) → Clay → is sourced from (clay is chiefly what feldspar becomes when it weathers) → Orthoclase
Jingdezhen → produces (more or less continuously for over a thousand years, on local deposits of both kaolin and porcelain stone) → Porcelain → is composed of (kaolin, for the plasticity that lets the body be shaped before firing) → Clay → is sourced from (plagioclase weathers to clay as readily as potassium feldspar does) → Plagioclase

These are the most distinct paths back. Jingdezhen can be traced through others besides.