The heart shape is somewhat similar to the pear shape, but with a groove. A heart must be cut to a near perfect proportion of 1 : 1 width and length ratio and with the wide "shoulder" to bring out maximum briliance. The groove must be polished to prevent waxy reflections when viewed through the table.

As a very romantic feminine stone, its popularity has increased with the move away from the more conventional round engagement ring. Its unique shape creates an unusual effect in any design.