Cut contributes to brilliance, and it is important to consider that while choosing a diamond engagement ring. It is also equally important to consider its clarity grade. Not all diamonds are of gem-quality or grade. For instance, diamonds with P1 or P2 grades are not typically gem-grade diamonds, as very little natural light passes through them in an inviting manner. Yet again, they show up in the market since they are, after all, diamonds, although only industrial-grade. They have inclusions that are visible to the naked eye and are not as brilliant as you except gem-quality diamonds to be.
Prior to buying a diamond, be wary of advertisements like ones that promote a “one-carat diamond ring at an extremely low price”. For all you know, the diamond ring advertisement could be misleading. Stay wary of buying a sub-gem-grade diamond.