Haha, cool. Nah, she was absolutely surprised as I got on my knees after our long term of relation and never thought about marriage, that mades it double exiting.
Found a product picture of her ring, white gold, 3 brilliants w/00.75ct.
That has done the trick, another advantage for her is the everyday wear it ability.
To be honest: I'd never thought about a too small and poor ring whats this says about me...maybe this is also a matter of the social environment