Ask the MB: Engagement Ring
A: We've answered this question before regarding the man's ring (with a chart), and we'd put a gemstone engagement ring for the Mrs. at the same lousy position on the scale.
Don't do it man.
If you want to set yourself apart from your Zales-shopping peers, while simultaneously conferring loads of class upon your bride-to-be (and by association, you), apply the understatement principle and choose a band. We like platinum. A good local jeweler should be able to create one in a shape you like for roughly a grand. If not, there's always Tiffany & Co. If she requires a diamond, get two with a pair of earrings.