Marion says:
"ZEN is a ring for couples who are looking for a very simple and unobtrusive, but still very special wedding ring.
That sounds so contradictory... but ZEN meets these criteria:
A very puristic ring, just a band with clear edges, but if you look closely you can see that the side surfaces swing inwards and outwards. As a result, the ring sits completely differently on the finger and if you put a ZEN memoire or ZEN solitaire on it, then these side surfaces twist into each other and the rings slip very tightly together.
With the ladies' ring, you can also set diamonds on these sides instead of on the top of the ring."