River Pebbles texture / procedural

Support Materials and Textures
1

Hi everyone! Today i’m trying to create a bunch of river pebbles, no problem with Modelling and physics, but i really can’t find a pebble texture, i’ve also tried to make it procedural, but it looks horrible…
This is my actual scene, nothing special, i’m just exercising.

pebbles.jpg1920×1080 1.02 MB

By the way, do you know why is my gpu rendering that broken? ( i have an AMD R9 290x )

pebblesgpu.jpg1920×1080 1.07 MB

2

How about this:

​http://www.blendernation.com/2012/12/19/tutorial-procedural-rock-material/

3

I’ll try that, but how about some white pebbles? Like those that you find near a river or in some Zen garden.