micro

I'm in the process of build and we are at the stage of choosing pebble colors. In our contract we have Stonescape Micro as the type. My pool builder is saying for our micro, to add the glass to the pebble costs extra and isn't standard. However, everything I've read says that Micro (by seemingly...

I found a post in the forums about a contractor advising not to use micropebble. Are there any known problems with it? Any input would help! Also, how much more expensive is it than mini pebble?