Almost any ring can be an engagement ring. There is no rule that dictates an engagement ring must have a particular stone or design, or be a certain size.
Correspondingly, what the difference between a normal ring and an engagement ring?
The difference between an engagement ring and wedding ring is that an engagement ring is given at a proposal or when a couple decides to get married. A wedding ring is exchanged at the wedding ceremony and represents the official bond of marriage. Both rings are often worn together as symbols of love and commitment.
In this way, what qualifies as an engagement ring?
An engagement ring is a ring indicating that the person wearing it is engaged to be married, especially in Western cultures. A ring is presented as an engagement gift by a partner to their prospective spouse when they propose marriage or directly after a marriage proposal is accepted.