I have some of their coral rock. The coral colonies are Lesser Star Coral,
Sideratrea radians. Since I asked for small softball sized pieces, there were mostly single coral attachments though some had two. Lots of clams and aiptasia on the rocks.....
Here's a link to a post I had with pics of the rocks. Mind you that this is a mix of 10 lbs of Gulf rock & 10 lbs of Coral rock. Look at the last pic, that should give you an idea of what the coral rock looks like and also the type of coral that is attached to the rock.