The clay between earthenware and porcelain. Fires at high temperature into a dense, dark body that holds water without a glaze and rings when tapped. The default workshop clay in any ceramics studio that throws — tougher than earthenware, more forgiving than porcelain.
Plastic clay body, typically a blend of fireclay, ball clay, and feldspar, fired to vitrification at cone 5–10 (~1200–1280 °C). Body color ranges from buff to red-brown to dark gray-brown depending on iron content. Water absorption < 3% post-fire — functionally non-porous without glaze. Compressive strength ~250 MPa fired; modulus of rupture 30–60 MPa.
The country potter does not sign the bowl. The bowl will be used a thousand mornings and the maker's name will not survive any of them — and that is exactly the right ratio. Stoneware is the material that lets a workshop do this. The body is forgiving in the hand, dense in the fire, useful past the death of the potter. It does not aspire to porcelain's whiteness or earthenware's softness. It is the clay that asks to be put to work.
Principled BSDF defaults derived from the sphere matte finish. Reasonable seed for Blender, Substance, Keyshot, Rhino — tune per material. Or grab the whole library at once: ForMaterials library →
# finish: matte albedo #1b1f2a metallic 0.00 roughness 0.75 ior 1.45 transmission 0.00 clearcoat 0.00 sheen 0.00 anisotropic 0.00
{
"albedo": "#1b1f2a",
"metallic": 0.0,
"roughness": 0.75,
"ior": 1.45,
"transmission": 0.0,
"clearcoat": 0.0,
"sheen": 0.0,
"anisotropic": 0.0
}
# Blender 4.x — Principled BSDF
# Stoneware Clay · finish: matte
import bpy
mat = bpy.data.materials.new(name="mat_stoneware")
mat.use_nodes = True
bsdf = mat.node_tree.nodes["Principled BSDF"]
bsdf.inputs["Base Color"].default_value = (0.011, 0.0137, 0.0232, 1.0)
bsdf.inputs["Metallic"].default_value = 0.000
bsdf.inputs["Roughness"].default_value = 0.750
bsdf.inputs["IOR"].default_value = 1.450
bsdf.inputs["Transmission Weight"].default_value = 0.000
bsdf.inputs["Coat Weight"].default_value = 0.000
bsdf.inputs["Sheen Weight"].default_value = 0.000
bsdf.inputs["Anisotropic"].default_value = 0.000
# KeyShot 11+ — lux Python API, Generic material
# Stoneware Clay · finish: matte
# Run from Window → Scripting Console
import lux
mat = lux.createMaterial(name="mat_stoneware", materialType="Generic")
mat.setProperty("diffuse", (27, 31, 42)) # 8-bit sRGB
mat.setProperty("metallic", 0.000)
mat.setProperty("roughness", 0.750)
mat.setProperty("indexOfRefraction", 1.450)
mat.setProperty("transparency", 0.000)
mat.setProperty("coatingWeight", 0.000)
{
"_format": "Substance Designer / Painter \u2014 pbrMetalRough constants",
"_about": "Stoneware Clay \u00b7 finish: matte",
"baseColor": {
"r": 0.011,
"g": 0.0137,
"b": 0.0232
},
"metallic": 0.0,
"roughness": 0.75,
"ior": 1.45,
"opacity": 1.0,
"anisotropyLevel": 0.0,
"_notes": "Channels listed are the standard Substance pbrMetalRough output. Drop into a Uniform Color node per channel, or as the constant input on a layered stack."
}{
"asset": {
"version": "2.0",
"generator": "ForMatter"
},
"materials": [
{
"name": "mat_stoneware",
"pbrMetallicRoughness": {
"baseColorFactor": [
0.011,
0.0137,
0.0232,
1.0
],
"metallicFactor": 0.0,
"roughnessFactor": 0.75
},
"extensions": {
"KHR_materials_ior": {
"ior": 1.45
}
}
}
]
}# USD Preview Surface — UsdShade.MaterialLook prim attributes
# Stoneware Clay · finish: matte
def Material "mat_stoneware" {
token outputs:surface.connect = </mat_stoneware/PreviewSurface.outputs:surface>
def Shader "PreviewSurface" {
uniform token info:id = "UsdPreviewSurface"
color3f inputs:diffuseColor = (0.011, 0.0137, 0.0232)
float inputs:metallic = 0.000
float inputs:roughness = 0.750
float inputs:ior = 1.450
float inputs:opacity = 1.000
float inputs:clearcoat = 0.000
token outputs:surface
}
}
ASTM C242; Robin Hopper *The Ceramic Spectrum*.
Blue-black Jasper stoneware with applied hand-finished reliefs. Wedgwood devised a special jasper mixture to imitate Roman cameo-glass.
Wheel-thrown glazed stoneware vessel; accession 1964.2; 15 1/2 x 9 x 8 1/2 inches; gift of the artist.
Northern Song Jun stoneware with thick opalescent blue glaze, fired in Henan kilns supplying the Song court.
House vocabulary — terms ForMatter uses with intent.
Materials and processes for people who design and make things.
A local-first library of materials, processes, applications, and finishes — equal weight, citable everywhere, with cost-over-volume curves, trade-off profiles, equipment-tier filters, and second-life paths layered onto the data so a student can move from "what is this" toward "what's actually buildable here, now, by me." Part of the renato.design ecosystem — sibling of Plenum, Specimen, Ingenue, gesture, graf, and the Renato Rhino plug-ins. Form and matter, inseparable.
Half of teaching materials is teaching how the material is made into the thing. The standard subscription library was always light on that half. The wedge here isn't better samples or a prettier interface — it's treating Process as a peer entity, not a footnote.
Conway's Material World on raw materials, Lefteri's Making It on processes, Forty's Concrete and Culture, Sparke's Design in Context, Bürdek's Design: History, Theory and Practice of Product Design, Schröpfer's Material Design on materials in architecture, Winchester's The Perfectionists on tolerance, Minshall's Your Life Is Manufactured on the global supply chain, von Busch's Making Trouble on material activism, Were's How Materials Matter, Hegger / Drexler / Zeumer's Basics Materials, Untracht and McCreight on metalsmithing, USDA Forest Products Lab on woods, GIA on gemstones, Schott / CoorsTek / Toray / Owens Corning datasheets, MakeItFrom for verifiable property numbers, ASM Handbook, ISO standards. Museum holdings draw from the Met, MAD, V&A, Smithsonian American Art Museum, Newark Museum of Art, British Museum, Heard Museum, Smithsonian NMAI, Eiteljorg Museum, Philadelphia Museum of Art, Cranbrook Art Museum, and Grand Rapids Art Museum — collection-record permalinks only, designer overview pages and exhibition listings excluded. Voice blocks now ride on every entry kind — material, process, application, and finish — and include Ruskin on iron, Anni Albers on twining, Greg Lynn on the shred-and-teeth NURBS lineage, Pugin on the metal that won't be hammered, Barthes / Yanagi / Benjamin channeled within their philosophy; Sparke, Bürdek, Forty, Conway, Schröpfer, Minshall, von Busch, Lefteri, Pat Pruitt, Mary Lee Hu, Tom Joyce, Albert Paley, and the rest of the contemporary makers quoted verbatim with citation. All cited.
Local to this browser. No cloud, no account, no telemetry.