Heart-cut diamonds are the most expensive style due to the cost and expertise required to manufacture diamonds in this shape. The process of cutting a diamond into a heart shape is difficult and demands a skilled diamond cutter. A heart-shaped diamond is usually larger than one carat because the cutting process is easier with a bigger diamond.
The 10 most common diamond shapes, in order from most expensive to least expensive, are heart, pear, marquise, radiant, round, cushion, princess, asscher, oval and emerald. Cuts that are more difficult to create or cause significant diamond waste are more expensive.
Round-shaped diamonds are the most popular type of cut because it is considered to be a timeless style that showcases the diamond's brilliance.