its cleavage
its cleavage
cleavage. (ha, ha.)
calcite has a regular arrangement of atoms.
No, a Hickory leaf edge is typically serrated or toothed, not smooth.
Willow leaves are smooth-edged.
Deckle edge paper is paper that has a rough or uneven edge, resembling the edge of a torn piece of paper. This type of paper is made by intentionally leaving the edges of the paper untrimmed during the manufacturing process. Regular paper, on the other hand, has smooth and straight edges that are cut during production. The deckle edge gives the paper a more rustic or handmade look, while regular paper has a cleaner and more uniform appearance.
A nickel has a smooth edge. No ridges.
Amongst "regular" objects, a sphere, an ellipsoid, a paraboloid. A smooth but irregular lump of putty could qualify.
A crystal!!
A crystal
no
the continental shelf-edge or shelf-break