this would be awesome if you rendered it on a lighter background. go to the 'rendering' tab at the top, scroll down to 'environments', and change the background color to more grayish.
Wanted to produce some quickie renders in marmoset. Still a lot of refinement to do on the texture side. Final rendering will be done in Unreal Engine 4.
It was just a test glass for rendering purposes, it's rendered in Toolbag but it had an IOR of 1.0 so it didn't refract at all. This is from the first day of texturing :)