令卡鑲有別於其他任何鑲法嘅最大因素就係佢唔需要任何戒爪或者戒托去支撐寶石，而係利用金屬擠壓的力量去將寶石固定。使用卡鑲代表住鑽石無被金屬包圍嘅部分相對較多，亦因此會更為閃爍耀眼。雖然，驟眼睇落你可能會覺得採用卡鑲嘅戒指唔夠其他鑲法堅固——但唔需要太擔心，因為卡鑲普遍會施加每平方英吋12000磅嘅壓力於主石上。
What makes Tension setting unique?
Perhaps the biggest factor separating Tension setting from the others is that it does not require any mounts or prongs. Instead, Tension setting utilises the compression force between metals to hold the gem in place. Using Tension setting means that more parts of the diamond will be exposed, thus the brilliance and fire of the main stone can be enhanced. At first glance, you may think that tension-set rings are not as robust as the others, but fear not – tension setting usually exerts around 12,000 pounds per square inch of pressure.