This is one of over 5150 textures generated by Filter Forge, a Photoshop plugin that allows you to create your own filters.
With Filter Forge, you can:
To open this filter, you must have Filter Forge 1.0 or higher installed on your computer. If you don't have it installed yet, click here to download Filter Forge
It allows u to create different kind of rock. U can choose between 5 structure curves and set its 3 colour. Similar colours produce more realistic results.