Is bleach cured rock supposed to be brown?

[LeChef]

Not all the rocks are brown just a few they finished soaking in bleach and prime for a few weeks. Comparing the left and top rock with the one on the right, should I do another bleach cure?

 

[Idoc]

You should be fine...not all rock is white in coloration. Many rocks are naturally brown...It depends on the type of rock. I have a bunch of pukani rock that is white and brown mixed when dried and clean.