List of solids

Add whatever solid you want, real or not, as long as it has no viscosity, (Which might belong in List of liquids.) it can be seen with the human eye, (Which might belong in List of gasses.) and it doesn't explode, like trinitrotoluene. (TNT) (Which belongs in List of explosives.)

The list:
Goo

Ice

Wood

Plant

Wax

Glass

Nitrogen Ice

Coal

Brick

Iron

Dry Ice

Sponge

Rime

Vine

Quartz

Titanium

Gold

Ceramic