Suru is a revitalization of the icon set that was developed for the (now defunct) Ubuntu mobile platform. The principles and styles created for Suru now serve as the basis for a new FreeDesktop icon theme. It has also been extended with a desktop cursor theme.
Original mobile application icons have been repurposed to theme their GNOME counterparts. Folder and file type icons have been added, based on a unreleased Suru concept. Plus a complete symbolic icon set has been created, with many icons based on the original Suru system icons.
Supplementary to the icon theme is the Suru cursor theme. It has a style designed to compliment the Suru icons through subtle nods to the geometry of the icons.
Suru for the desktop has a complex set of guidelines that it follows to achieve a cohesive look for all icons.
They are written as a combination of the original Suru icon guidelines with elements of the Tango icon guidelines to make Suru a suitable FreeDesktop environment icon theme.Design Guidelines
Suru for the desktop is still in-development, but you can clone the GitHub repository and use the pre-release version if you want.