Emerald icon theme is based on Flattr and Breeze (Plasma next icons) icons themes. It contains more than 4000+ icons for applications/folders/status/mime-types/others and it offers two themes: Emerald it can be used with light panels and Emerald-Dark use it if you are using dark theme.
It is compatible with Unity, Gnome, Xfce, Mate, and Cinnamon. It is first release of this icon theme and in active development, if you found any missing icon for an application/mime-type/folder/devices/or any other icon then report to creator. You can use Unity Tweak Tool, Gnome-tweak-tool or Ubuntu-Tweak to change icons.
>>>Available for Ubuntu 14.10/14.04/12.04/Linux Mint 17/13/other Ubuntu derivatives
To install Emerald-icon-theme in Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal: