Pear-Shaped Diamonds are typically a combination of a round and a marquise shape. A quality Pear diamond ought to have very good or excellent symmetry, and the point of the diamond should be in line with the apex of the rounded end. A pear-shaped diamond should be set with a prong at the point of the stone – this ensures that most flaws and inclusions will be covered by a prong. Pear diamonds typically contain 58 facets, which allows light to pass through the diamond much in the way light passes through a round diamond.
A heart shaped diamond has a cleft at the top of the stone and typically flaunts great brilliance. For obvious reasons, heart shaped diamonds are considered the most romantic of all the diamond shapes. When finding the right heart diamond for an engagement ring, symmetry must not be overlooked – the two halves of the heart should be identical. As a general rule, heart shaped diamonds smaller than .50 carats are not a good selection, as they will appear smaller after being set in prongs. Three prong and bezel settings are the best match for heart diamonds.
A marquise-cut diamond is considered a classic diamond shape because it compliments any engagement ring. When selecting a marquise diamond, color and clarity are the two most important aspects to consider. A marquise diamond is cut in a way that is similar to a round brilliant diamond, except the carat weight of the stone is maximized by lengthening it into its highly recognizable boat-shape. Unfortunately, because marquise-cut diamonds have such a distinctive elongated shape, imperfections and flaws are more pronounced than they are in traditional round brilliant diamonds.