Tension Engagement Ring Settings. Tension engagement ring settings are the strongest setting available. This because they use the entire ring as the setting and not just a separate setting that is attached to the ring. The diamond is set into grooves that actually a part of the ring and thus exerts massive 12,000 to 50,000 pounds of pressure per square inch to ensure that any stone set into it isn't going to go anywhere. The only issue with these settings is that the having the ring set directly it can cause serious problems: First of all, only diamond may be used as the no other stone can withstand the high amounts of pressure. Second, if the diamond should become loose, the entire ring's structural integrity is compromised and will have to be replaced. This being the case, these rings are strong and seldom fall apart and thus can be used as an engagement ring setting with no need for serious concern.