NovaShell is a beautiful Gnome Shell theme that has just released version 0.4 that brings support for Gnome Shell 3.6! Users of 3.4 can still download and use NovaShell 0.3.
This theme reminds me of the elegant transparencies of Faience, but differentiates itself with the bigger elements on the applications view. The buttons on the panel are lovely too.
What is great about NovaShell (besides its looks) is that it offers a configuration script that allows you to hide/show panel corners, set panel size, show/hide application icon etc. The script is found in the folder that you will put under /home/.themes and you can run it through terminal.