Desert Blocks is a package with 7 photo realistic sand stones, suitable for big and small scale scenes. They have high resolution textures at 4096x4096. Each side is completely unique so you can get many variations out of one stone by rotating it in different angles.

The color is very neutral and each material comes with a HSV node, so you can easily add a color tint to give adjust it to your scene, if the ground or the rest of it is more yellow, more grey, or even a red, marsian environment.