A 2-carat heart-shaped diamond is perfect to express your true romantic feelings. The shape outshines with its statement look, and at 2 carats, the shape accentuates with a defined outline, making it more impactful and beautiful. The length-to-width ratio for a heart-shaped diamond is 0.90 to 1.00, making it visually appear a little smaller than round cuts, which is why simple solitaires, halos, or soft prongs look breathtaking with this shape.