Has anyone seen this ring ???

[CanadianGal]

I saw this ring on a lady at the grocery store the other day , I made an artist''s rendering of it

... the diamond was huge...2+ct, it had white gold on the botton (the majority of the band) and had yellow gold on the top part , surrounding the diamond , with a yellow gold "arch" type thing over the diamond

.. anyways i was just wondering if anyone knows about this type of ring , like who the desginer is etc. ... and now my rendering

(hope it works!)