What is the effect of cleavage on a diamond’s ability to split?

What is the effect of cleavage on a diamond’s ability to split?

• A. None
• B. It allows clean splitting along defined planes
• C. It increases opacity
• D. It changes color

Answer: (B)

The ability to split along clean, flat surfaces comes from cleavage in crystals. In a diamond, the carbon atoms form a very strong, orderly lattice, but there are specific directions where the bonds align in a way that makes it easier for the structure to break. Those directions are the cleavage planes. When a diamond is struck along one of these planes, the lattice can separate cleanly, giving a flat, smooth fracture. So cleavage makes clean splitting along defined planes possible. It doesn’t affect how opaque the stone is or its color—those properties depend on other factors, not the way the crystal breaks.

The ability to split along clean, flat surfaces comes from cleavage in crystals. In a diamond, the carbon atoms form a very strong, orderly lattice, but there are specific directions where the bonds align in a way that makes it easier for the structure to break. Those directions are the cleavage planes. When a diamond is struck along one of these planes, the lattice can separate cleanly, giving a flat, smooth fracture. So cleavage makes clean splitting along defined planes possible. It doesn’t affect how opaque the stone is or its color—those properties depend on other factors, not the way the crystal breaks.