150 8K and 4K Rock Alphas and brushes (Seamless & Tileable) is an expansive collection of photoscanned rocks from all over the world :

Desert rock,

 Cliffs,

Shales,

Canyons,

Jagged,

Lava,

Smooth,

Rough,

Layered,

Beach,

Rippled,

Gouged,

Tundra,

Sandstone,

Icelandic Layered,

Shale Beach,

Cracked,

Nordic Coastal,

Creek Stone,

Mine Rock,

Muddy,

Salt Mine,

Sedimantry,

Layered Cliff,

Quarry,

Weathered, 

Sharp Rock,

Sharp Cliff,

Thai Rock,

Cave Rock,

Slate Rock, and many many more.

• Each brush uses a high-quality 8192*8192 and 4096*4096 8bit depth map
• A huge variety of brushes means you'll always have what you need at hand
• The Zip File contains a blend file and a folder containing 150 Rock alphas.

These brushes can be used in any software that supports Alphas like Zbrush, 3D coat, etc.

Note: Currently only 25 brushes are imported in blender but all 150 are provided in later versions all the brushes will be imported 

To install the brushes

1. Download the file from your orders page and extract the zip file
2. Open Blender and go to File > Append > Navigate to download location > Select the PhotoScanned Rock Brushes + Alphas.blend file > Click Append > Select the Brush folder > Select all the brushes Starting with "SS" using shift+click > With all the brushes selected click Append
3. When in Sculpt mode, with the Draw tool selected, you should be able to choose between all the different brushes by clicking the small icon just below the "Sculpt Mode".
4. For rest of the brushes simplely import .psd file to brush alpha and set it to non color or itt will cause some noisy issues. 

For the sake of show case here are screen shot of what you will be getting in this pack (These are .jpg because of the thumbnails as there are no thumbnails in .psd file)