I've tried to reproduce the ice melting from my freezer when I de-ice it. The blue shade is not physically correct (you need several meters thick of ice to see it bluish), meaning the blue absorption should be lower. However it provides a icy feeling. Remove it if you want to be realistic.
Fully procedural, fully uv-able
That image took between 1h and 2h on a Xeon 4 core 5450, if I can remember, but I'm not sure. Just try it!
Looks very good, how long does it take to get to a good SPP?