Argent

Colour Group: Brun Base, Cream, Noir Base, Pearl, Rouge Base, and Rouille
Rarity: Unnatural
Importable?: Yes

Or

Colour Group: Pearl, Rouge Base, and Rouille
Rarity: Unnatural
Importable?: Yes

Cuivre

Colour Group: Rouge Base and Rouille
Rarity: Unnatural
Importable?: Yes

Zinc

Colour Group: Brun Base, Cream, and Rouille
Rarity: Unnatural
Importable?: Yes

Laiton

Colour Group: Brun Base and Rouille
Rarity: Unnatural
Importable?: Yes

Plomb

Colour Group: Noir Base, Pearl, and Rouille
Rarity: Unnatural
Importable?: Yes

Étain

Colour Group: Cream, Noir Base, and Rouille
Rarity: Unnatural
Importable?: Yes

Nickel

Colour Group: Noir Base and Rouille
Rarity: Unnatural
Importable?: Yes

Papaya

Colour Group: Crayon, Pastelle, and Rouge Base
Rarity: Special
Importable?: Yes - Admin customs only

Seafoam

Colour Group: Brun Base, Crayon, and Pastelle
Rarity: Special
Importable?: Yes - Admin customs only