Hope this works:
https://ibb.co/8KV4tTF
You can see that the culet is higher in the right hand side picture. I think this is a cost effective way to make your diamond look about 0.10ct larger, and imo more elegant/"bridal" too. I changed my setting as I felt my setting was too alterative and not very bridal..and the rose gold didn't grow on me as well, lol.
The second obvious point is less prongy look = easier to see the sparkles/ glow haha.
However 4 prongs make the diamond look quite square, even so for my stone which is 6.8mm (already not very small). At arm's length it does look more cushiony. But overall for the elegant side view and larger look, I love my setting.
Actually many jewellery stores like SK, Soo Kee, Goldheart, Lee Hwa sell 95% cathedral designs and now I can see why.