Unsure what you mean of a unique formation, there is no defined structure it is just a regular liverock covered in hundreds of mohawk polyps, as for other coral I think theres a tiny bit of xenia and anthelia, and maybe a clove I have to check.
Redoing the rockscape on my 25g, got a bunch of nems to sell 25 ea
also selling mohawk rock $120 will do trades for some biobricks, or coral
Pickup 10307 or meet in city 116th st
could also meet in bay ridge area of bk or within reasonable distance.
Nems are pissing off some other zoas of mine...