Before shopping your engagement rings, you need to know about ring cuts and shapes. Here are some popular cuts :
The marquise is an egg-shaped with pointed ends.
The cushion cut is a cross among a rectangle and an oval; it has a pillow shape, and it is also entitled an "antique cut."
An emerald cut (formerly developed for the gem of the same name) is rectangular with cropped corners and long, stair-step-like facets.
An asscher is alike an emerald cut, but square, so it appears octagonal (the radiant is a popular variant of these but with facets that offer it even greater sparkle).