Round Cut Diamond The round cut diamond is relatively pricier than other shapes. Owing to its popularity, a majority of engagement rings with diamonds feature round cut gemstone. In fact, a round cut diamond is adaptable to virtually any hand shape or size, since it appears proportionate and does not overwhelm the finger. Princess Cut Diamond Princess cut diamond is a modern alternative to the round shaped gemstone. Its square shape disguises diamond inclusions, meaning that the stone will appear beautiful in all carat weights. The princess cut gemstone flatters virtually any hand size or shape; the geometric shape of the gem tends to appeal especially to the kind of people who likes modern jewelry. Emerald Cut Diamond The rectangular diamond shape offers long and sustained flashes of light, unlike the overall sparkle in a round diamond. The outline of the emerald cut diamond is rectangular, with larger facets than a princess cut diamond’s facets. An emerald cut diamond has an elongating and slimming effect on the finger, making it an ideal shape for a person with wide and shorthands.