What designs are popular?

比較的シンプルななかに、おふたりらしいエッセンスを少し入れたものに人気が集中しております。

Also, since they are worn all the time, rounded, handmade, and warm designs that fit comfortably in the hand are more popular than edgy designs.
In many cases, women decide on a design based on the fact that it will be stacked with their engagement ring.