So my phone fell out of my pocket, screen directly landed on a rock on the ground. There was a nice scrape right in the dead center of the screen.
I found a product called 3M "Perfect-It III Trizact Machine Glaze", or otherwise known as "3M 06070". It is an aluminum silicate based polishing compound for removing swirlies from extremely high-gloss automotive finishes. The stuff is approximately $65 for a quart size from NAPA auto parts. For those who aren't aware, Gorilla Glass itself is an alkali-aluminosilicate, so this particular polishing compound is chemically compatible with the material the screen is made out of.
**Apparently Rezound is NOT Gorilla Glass (confirmed by Corning & HTC) but must have a very similar composition**
It works absolutely beautifully. I started by applying it with a polishing cloth and rubbing by hand, but I switched over to a polishing cloth Dremel tip in my cordless drill at low speed. Approximately 45 seconds worth of polishing the screen with the drill and scrape is hardly noticeable now. With a little more careful work, I believe it will be completely gone!
Unfortunately its expensive. $65/quart is really not that bad though, when you consider that most polishing compounds that are sold specifically for glass screen repair cost as much as $30 for 8 ounces, and in my experience are less effective than 3M 06070.
I hope this helps anybody with a damaged glass on the screen. Best bet is to just get a screen protector. Not having one is a potentially expensive mistake..
While this does work on the Rezound, I would NOT attempt this on any other glass screen unless you can verify that it is real Gorilla Glass or some other aluminosilicate glass.
Alternately, if you prefer to simply replace the entire glass/digitizer portion of the phone, I have found one available online (for cheaper than this polishing compound too!) here at this site: http://www.gogotoshop.com/product_in...oducts_id=4896