An old cut diamond, also known as an antique cut diamond or a vintage cut diamond. Old cut diamonds possess distinct characteristics that set them apart from the more standardized and brilliant-cut diamonds of today. An old cut diamonds feature an open culet, which means the tip at the bottom of the diamond is flat instead of being pointed. This is a distinctive characteristic of old cut or antique cuts. They can be found in antique jewelry pieces or in modern jewelry designs that incorporate vintage-inspired elements. Old cut diamonds come in various shapes, including Round, Cushion, Oval, Pear and others.