13:54, 19th Jun 2013
enjoy: It's just a blue color blend with some filters added. It lacks a
proper object. Not approveable. But here is a tutorial for you on how to draw gems/diamonds, so you can practice.
When you have practiced, remake the icon and upload it. I would love to see your
progress! You can contact me in private message if you need any
help. I couldn't find a tutorial on normal rocks that was good, so if
you want one on normal rocks, I can make a tutorial on that for you.

Gem/Diamond tutorial

Huh, that weird filter isn't on my .psd version..

The filter does not matter. Nice icon, the colors looks good. If i were you I would make some parts of the blue part a bit brighter. 5/5 to encourage you