Mostly, a diamond engagement ring has an average size of 1.0 carat that fits in well with the finger sizes of most individuals. Choosing the average size of diamond rings will give the ideal size that can match well. It is important to choose an engagement ring with an average size. The carat size of an average ring also has the benefit of lesser costs compared to other sizes. Besides, other crucial factors such as the carat weight, clarity, and color, the cut quality is an important factor when choosing an averagely sized diamond ring. The average size of diamond rings differs according to the region or country. For instance, in the United States, the average size is rated to be one carat, whereas it is 0.6 carats in the United Kingdom. The difference in the average sizes in various regions should be considered well when choosing a diamond engagement ring.