A cleavage is the area down the middle of an object, usually referred to the area in-between the left and right breasts of a human woman.
cleavage....
Galena's cleavage is cubic.
Sulfur's cleavage is imperfect.
Silvers Cleavage Is Silver Doesn't Split .
Cobalt has a cleavage in three directions, forming a cube.
no cleavage
Show cleavage? What Cleavage? Not really
Muscovite has perfect basal cleavage, or book cleavage.
cleavage
Aluminum does not display the characteristics of cleavage.
cleavage
sulfur does not have cleavage.