Bauxite Residue

Bauxite Residue
Studio ThusThat

Carbon black

Carbon black
Tino Seubert

Japanese Knotweed

Japanese Knotweed
Marina Belintani

Seaweed

Seaweed
Studio Nienke Hoogvliet

Seashell

Seashell
Studio Mixtura

Shrimp shells

Shrimp shells
Jade Ruijzenaars

Volcanic ash

Volcanic ash
Dzek & Formafantasma

Milk

Milk
Ekaterina Semenova

Bacteria

Bacteria
Living Colour

Biobitumen

Biobitumen
Raewyn Martyn

Soil

Soil
Natural Earth Paints

Rain

Rain
Aliki van der Kruijs

Indigo

Indigo
Kala Chaupal

Terra-merita

Terra-merita
Kala Chaupal

Black Walnut

Black Walnut
de Onkruidenier

Milk

Milk
Milk Paint

Linseed, Calcite, Bentonite

Linseed, Calcite, Bentonite
Natural Earth Paints

Metal waste

Metal waste
Studio Agne

Plant

Plant
Lucila Kenny

Bark

Bark
Lucila Kenny

Avocado seed

Avocado seed
Lucila Kenny

Egg

Egg
Vera Gulikers

Bacteria

Bacteria
Hoekmine BV

Mineral residue

Mineral residue
Studio Mixtura

Calcium Carbonate

Calcium Carbonate
Rocks

Alum

Alum
Widely available