Small update.
Want to use some stone in my river bed.
Went to visit Stodels and bought a few bags of small stones.
Can't really see what's in the bag, but you sort of get an idea.
Got home, opened the bags and washed the stones in the kitchen sink.

While in the bag I did not realize that the white stones are so brilliantly white and also a bit shiny, not so good.
Two different sizes.
Also got a bag of roundish different colours stones.