The Diamond is one of the rarest and is currently considered the most popular of all Diamond shapes. Heart are a modified version of the Round. Because they reflect lots of light, the color of a heart diamond is harder to distinguish than it is in a diamond with a large table, such as an other Diamonds. Heart often cost more than other Fancy of the same weight because of shape cutting. This cut price generally about 20% to 25% less than Round. Heart diamond generally cost about 15% to 20% less than rounds.