average diamond size for engagement ring
The average engagement ring has a center diamond of about one carat and a total carat weight of approximately one and a half carats. An engagement ring around two carats or above would be considered 'big' for the average girl's standards, and anything three carats or above would likely elicit some serious jaw dropping. Besides carat weight, several other factors, like the shape and cut of a diamond, can affect how large it appears.