They appear longer and angular. Widest at the cheekbones, they have narrower forehead and chin. It looks similar to an oval face shape, but is more angular.
If you have a diamond face, you have a narrow forehead and chin and a long, angular face. The best hairstyles for you will widen the appearance of both your forehead and chin without making your face look longer. Women should choose a long hairstyle that adds width to the chin and forehead, such as a lob with side swept bangs. Men should choose a hairstyle that makes the forehead appear wider, such as a brush up, and consider getting a beard to fill out the chin area.
To balance angular features, you can try round or oval frames. Browline style frames can highlight the eyes and rimless glasses can also be a good choice.