Not a pro but..

The space appears to have been designed for an unframed rectangle mirror.

It also appears that the lighting boxes are within the space intended by the designer of the space to be for the mirrors.

IF the mirrors could cover the entire recessed rectangle and the light fixture could be added atop the mirrors( with round holes cut in the mirrors to access the wiring, that would be amazing.

Whether or not that is possible, I suppose, would depend on the fixture ... if the screws to attach the fixture would be covered by the fixture that slips onto the base.

Take these pictures to the store where you'll be buying light fixtures and ask them about that.

You'll probably want the mirror to be at least six inches above the height of the tallest person in your family.

Found this ... so it can be done. Wondering about glare -- might keep that in mind as you select your light.

https://www.homedit.com/lighted-vanity-mirror/add-lighting-fixture-on-mirror/

You might consider a fixture with an arc that will raise a globe mostly above the rectangle.

Not necessarily a clear globe.

Perhaps more of a sconce -- but painted your favorite bright bold color:

https://www.allmodern.com/--Spartansburg-1Light-Armed-Sconce-MGNG3646-L6117-K~LFMF2535.html?refid=GX270365213900-LFMF2535&device=c&ptid=364226927246&targetid=pla-364226927246&network=g&ireid=35212593&mktdc=GXPLA&mktcm=442729276&mktst=52275655661&mktcr=270365213900&mkts=%7Bsk%3A%7D&gclid=EAIaIQobChMI2N7x2-G25wIVAZ-fCh2QFwjKEAQYCCABEgLG4PD_BwE

This would also raise the light above the mirror and avoid glare but not sure about that stick sticking down -- would want to know if it's available shorter or is adjustable.

https://www.allmodern.com/lighting/pdp/bautista-1-light-armed-sconce-wrlo7371.html 

https://www.build.com/mitzi-h318102/s1630966?uid=3870153&source=gg-gba-pla_3870153!c1710656096!a65810353174!dc!ng&gclid=EAIaIQobChMI746_z-S25wIVA1YMCh2yrgbeEAQYCCABEgKGc_D_BwE&gclsrc=aw.ds

Is the electrical outlet to the right/bottom going to stay exposed?

How are you going to prevent water damage, over time to your towers? I have a tower, but it is sitting on top of an extra piece of marble to protect the wood from any damage over the years. Maybe ask you contractor to fix that for you.

if you want the whole space mirror, then get a 4" backsplash piece that matches your quartz and put that in behind the faucet. mirror on top of it.

Or, Tile the entire space, find some smaller mirrors, and hang your lights over the top of it.

Or, what Jean said. it will look the cleanest. basically like this, but yours is framed

fill in the space w/a mirror, cut a hole in the mirror and install your lights (although, I like the sconces on the side better)

you could do something like this, but not w/the hole for top lights. you'd want sconces on the sides for the best lighting.

Backsplash? In my master I did a higher-than-normal backsplash of about 6" because it provides a nicer back-setting for the faucet. Are you planning on putting a backsplash there?

I recommend that you install at least a 6" backsplash, then fill the entire space with a custom-cut mirror, beveled or not. The lighting will go through the mirror.

Any local glass/mirror shop can do that for you. If you have a GC doing this work for you, he/she will arrange it with their preferred local glass shop.

yes we are putting a backsplash behind the faucets, it will match the countertop.

Hi Bernadette,

Maybe these custom wall sconces from our parent company, Lusive Decor, may work for the space above the mirrors:

Onde Wall Sconce

Balestra Wall Sconce

Thompson Wall Sconce

Or if there is a specific type of sconce you're looking for, our parent company may be able to replicate it.

All that is needed from you is a picture of the fixture that you'd like to be made, the desired specifications and quantity and have it sent to LDSales@lusivedecor.com and a member of the Lusive team will be in touch with you to walk you through the process.

Lusive Decor specializes in making fully custom light fixtures catering to the high-end luxury hotels, casinos, resorts and spa's with active & repeat clients that include MGM Grand, The Marriott, The Wynn, Hard Rock Hotel & Casino, and several others in the hospitality industry.

We hope this information will help you make a more informed decision on your home needs.

Very Best,

Tai Truong

Elements of Design

3400 Medford Street

Los Angeles, CA 90063

tai@lusivedecor.com

www.elementsofdesign.com

I did what others have suggested: filled the space with a mirror that had a hole cut in it the size of the electrical box and hung a bathroom wall sconce on the mirror. I used the Tech Lighting Lufe that's almost as wide as the mirror. Whatever sconce you choose, I'd make sure it doesn't hang too low as the electrical boxes are already pretty low, and that the sconces are either flush to the glass or that they look good from the rear (because you'll see their reflection) and don't cause glare (exposed bulbs probably wouldn't be a good idea). I used flat mirror glued to the wall with only a virtually-invisible support bracket at the bottom.