First of all its not called Moon Rocks, thats one of the most retarded names I have ever heard for a drug, why all the marketing names or do you actaully think its good to call it something like that?
Secondly you can no tell at all by looking at MDMA rocks if it is MDMA or not, Ive had extremley good dark black/purple, yellow, green, pink, white, opaque MDMA ROCKS and they have all been very good, you cant tell by looking at it....
Also blah blah is right in what he says, in rock form it can only be 84% pure maxium, otherwise it would be a liquid, its the salts thats keeping the MDMA togethor.. so no matter what anyone says if you have a rock of MDMA and you drop 150mg your more than likley dropping about 130mg.... of actual MDMA.