The other day I saw a lady wearing cushion cut diamond ring set by Valentine Magro. It was very beautiful. Through this site, my current favorite is Leon Mege.
Is Leon Mege is very well known? outside Pricecope?
Does he sell diamond as well?
to my knowledge leon does not sell diamonds. the vast majority of his business is doing contract work for other jewelers--some of them big name--and although he will be happy to do a ring for you if you seek him out, he doesn't advertise the retail side of his business. (hence you'll find his prices relatively reasonable for custom work, at least in my experience.) and therefore it's unlikely that a lot of lay people outside of pscope will have heard of him--even though he's probably the man behind lots of "designer" rings.