The Spherical Icon Set
by Ahmad Hania >> http://ahmad-hania.wateentech.com
Blog at http://ahmad-hania.blogspot.com

152 icons in 4 different size: 32*32px, 48*48px, 64*64px and 128*128px and it is in a PNG file format.
The icon set is licensed under the Creative Commons Attribution-Noncommercial-Share Alike 3.0 License.