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.
Cushion diamonds are an interesting combination of rounded corners on a square or rectangular frame. There are two cutting styles for this shape: Cushion Brilliant, which is a more vintage cut with chunkier facets and larger flashes of light return, and Cushion Modified Brilliant, which is more akin to a modern-day round diamond cut with smaller facets and more rapid light return. Cushion cut diamonds have been around for over two centuries and as a result, offer a very antique feel for an engagement ring.