Here is a photo of the materials I'm using. Or maybe not... let's see if it comes through...

After an exhaustive search, I found a framed mirror the size I wanted. So, got a framed mirror. Big deal. If I were doing it again (and I may some time down the road), I'd do as daisy suggests: get a nice unframed beveled mirror as wide as the vanity and as high as makes sense. It's clean and bright and doesn't call attention to itself.

What color are you walls?

It is difficult to find mirrors.

I tried internet, high end and low end mall stores, professional decorators shops, Pier 1, TJ Max, antique shops, big box stores...etc. but could not find one I liked, right before ordering a custom made mirror I found the perfect one in Ikea - the least expected place since I always thought the stuff there are for college kids or first time home buyers. We also found ideal cabinet pulls there, another unexpected purchases.

The glass company that made our shower glass also made the 2 beveled mirrors for our mbr-but they are unframed.

I had a custom frame made which unfortunately didn't work out and it's now hanging in my garage, probably in perpetuity. A local glass place quoted a very reasonable price to install a beveled mirror. I had the frame made online. The problem was the photo of wood frame looked terrible in a large size and was unworthy. I did get an estimate from Aaron Bros. for a very plain wood frame and, with 50% discount, they wanted $500. Um, no.

Very difficult. When we reno'd our bathroom, I used the unframed mirror and had it framed. The glass company took it, I picked out a frame at the frame shop, and the glass company took care of working with the frame shop, located nearby and who they worked with previously, cut the glass down to size, and then the whole thing was delivered when completed. Given the price of mirrors, if you can find a frame you like at a reasonable price, I think you'd be happy getting something custom. If this doesn't work for you, check out Hobby Lobby, BB&B, and some of the other places that offer discounts and see if you find something there.

Try Homegoods?

I love this one I got from HDhttp://www.homedepot.com/p/Glacier-Bay-Brazin-31-in-x-24-in-Wall-Mirror-900240/204404537

I had my sheet mirrors framed. The cabinet guy came out and did it in the house. He stained the wood trim to be the same color as the cabinet. It cost about $100.

here is an eternal option: http://www.pier1.com/Eternal-Mirror/2908457,default,pd.html?cgid=mirrors#nav=left&cgid=mirrors&start=1

For our dressing area, we just bought the same mirror that linelle has. Of all the mirrors it's the only one we really liked (my DH loved it and so I decided to quit while I was ahead). We tried our frame shop to find something similar and they just didn't have anything that approximated the "silver birch" style, so off we went to the mall. The nice thing about a mirror that isn't adhered to the wall (like the ones we removed) is that if you get bored with it you can change it out.

I would highly recommend dual medicine cabinet mirror. I put them in my kids bath (photo below) and I LOVE them- they hold so much. I wish I had them planned for my bath but I did a big mirror in there.

Another option would be to get round mirrors framed in chrome to brighter up and contrast with the expresso cabinets with a modern, blingy flare on top.

Oooh jerzeegirl, you got a silver birch mirror too!! I think it's a great mirror, don't get me wrong, but it turned out to have more gold in the silver than I'd been led to believe. In any other room in my house it would have appeared silver, but amid all my chrome and grays, it stood out. Fortunately, painting it solved my problem.

I just love that you painted that mirror silver - As soon as my DH saw the picture of your mirror, he said that's the one. We saw it at the store and I think the gold/silver combo will be fine for where we are planning to use it. The cabinets are espresso cherry, the countertop Carrara - the walls SW City Loft (a very light gray) and it's in a dressing room with almost no natural light. If it doesn't work, I will be requesting from you information about the silver paint you used!

We're nearly twins, jerzee! My vanity was supposed to be a warm mid-brown and it turned out darker, more mahogany-looking than I'd planned. Counter is also Cararra. My walls are SW Antique White, sort of french vanilla, and floors are a mid gray tile. Initially I thought the walls were too warm for the grays and chrome, but I like gray and cream together and I'm leaving it all as is. I had stressed over matching or mixing the metals and, in the end, have mostly chrome except for a bit of satin nickel. Nobody notices or cares. I hope you like the original finish on the mirror. A lot depends on how it works in your space. I have plenty of natural light in my bathroom. If you decide to go more silver, I can share what I did, plus what I did at first and what you should avoid doing. :)

We do have very similar styles, linelle! My whole house is painted in SW Antique White so I am quite familiar with it. It's one of those great neutral colors and I love it with gray. We have a lot of gray things in our house (including ourselves, haha). I haven't done my bathroom reveal yet - I am waiting for the dressing area to be done before taking any photos. It shouldn't be too much longer.

Thank you all for your great suggestions/ideas! I think I"m also struggling with having such large, wood framed mirrors (that the scale will look enormous!). I'm actually strongly considering a brushed nickel finish (beveled mirror still), to match the brushed nickel finish on the fixtures & lights. What do you think about that ? In terms of paint, I have no idea yet (something light).

Monrovia, I know a lot of people like the frame to match their vanity finish. That was my original plan, except the frame turned out too ugly to use. Now I'm glad I don't have a big (30x48) mirror framed in dark wood in my small bathroom. Not saying it can't look good, but the silver lightens the visual weight considerably.

Decision made! I have ordered two mirrors with a brushed nickel appearance (ever so slightly darker than my finish on my faucets). I think I will be very happy with them! I also decided to not go with the bevel --- wanted a more modern appearance. Found a great guy locally who makes them and the price was certainly right -- Again, many thanks!

Excellent choice! I think it will look great. I love your granite and vanity color!!!