We analyzed the 70000+ engagement rings in James Allen’s diamond inspiration gallery to determine what diamond shapes people buy in practice.
The figure below shows the distribution of shapes for natural diamonds. Round diamonds are the most popular shape, followed by princess, oval, and cushion. Oval diamonds have steadily increased in popularity over the last few years and are poised to overtake princess if the trend continues. Emerald diamonds look to be an emerging trend.
The figure below shows the distribution of shapes for lab-created diamonds. Round and oval shapes dominate lab diamonds; the remaining shapes all account for less than 5% each.