Best Rolex men's watch for a woman?

[Tseg]

Now that I have my Rolex my wife has strongly signaled she wants one. Actually she pre-signaled if I get one I better plan on getting her one. She does not like dainty girlie watches but does not object to diamonds on a watch (go figure). She has also indicated she likes a mother of pearl dial... does that come on a man's watch? She is trim figured but tall at 5'9" so a bigger watch works on her. Years ago she wore men's watches but for the last decade has collected an assortment of Michele and Coach quartz watches... but is now ready for a real watch.

What are some Rolex watch styles I should consider parading in front of her... nothing too extravagant (I already have designs on a second for myself!)?