Thanks Hannes, yes the sparkling is not the straightforward, but some mix with another refraction index and roughness, works quite well, though I still would like more 'wetness'.
This better? I don't know. I'll find some more photo's, but also thought this would be nice to make mossy boulders from, veggies like that would grow 'by normal'
Anyway, work is imminent, so experimentation time is over.