Clay Bodies: Earthenware, Stoneware & Porcelain

Clay Bodies

Earthenware, Stoneware, Porcelain

The three principal clay-body categories are distinguished primarily by maturation temperature and resulting density. Edge cases exist (cone 6 porcelains, cone 6 earthenwares), but the table below reflects the conventional ranges used by suppliers and studios.

Earthenware, stoneware and porcelain placed along a rising firing-temperature scale — The three clay families differ above all in maturation temperature.

Drop a photo here: raw clay or finished stoneware/porcelain (e.g. Unsplash “stoneware mug”)

LOW-FIRE

Earthenware

Porous · bright colour · beginner-friendly

A clay fired at low temperatures. Earthenwares do not vitrify at these temperatures — particle bonding is by sintering, and the body remains porous unless sealed by glaze.[Digitalfire]

Maturation: Cone 06–04, roughly 1000–1150°C (1830–2100°F)[Glazy]
Vitrification: none — remains porous
Typical colour: red, terra-cotta, buff (from iron-bearing natural clays)
Common use: tiles, decorative ware, low-fire functional ware with food-safe glaze

MID-FIRE

Stoneware

Dense · durable · the studio workhorse

Stoneware bodies vitrify in the mid-to-high fire range, becoming dense and non-porous once mature. The most adaptable category for functional ware.

Maturation: Cone 5–10, roughly 1180–1300°C (2160–2380°F)[The Ceramic School]
Vitrification: dense, watertight once fully matured
Typical colour: light grey, buff, brown
Common use: tableware, mugs, bakeware, sculptural work

HIGH-FIRE

Porcelain

White · translucent · refined

Porcelain matures at the highest temperatures, developing a white, fine-grained, often translucent body. Less forgiving than stoneware — softer when wet, more prone to warping in drying and firing.

Maturation: Cone 8–10 (commonly), with high-fire formulations to Cone 12, 1250–1400°C (2300–2550°F)[The Ceramic School]
Vitrification: dense, often translucent when thin
Typical colour: white
Common use: fine tableware, sculptural work, technical ceramics

— Sources — Digitalfire · Glazy · The Ceramic School