A 1-carat heart-shaped diamond is the perfect sparkler for all the romantics; she is going to love this diamond whether in a ring, a necklace, or a bracelet. While buying this symbolic shape, ensure you have the correct proportions, excellent symmetry, and a charismatic appearance. Another thing to note would be to get a 1-carat heart-shaped diamond with smooth and even upper curves, and the pointed tip requires a secure setting.