"Classroom Minerals"

A classroom set that covers the major types of coal.

Great for geology hardness tests.

Clear to yellow translucent.

Classic, white chalk, massive; from Cliffs of Dover, England.

Pure kaolinite powder, 200 mesh.

Exemplary display of hexoctahedral crystal shape.

Ward's® highest quality and purest mineral offerings.

Gemmy, sherry-colored crystals and sections approximately 3/8– 1/2"

Brownish gray, translucent.

Pyroxene group; gray-green, coarse crystalline.