Moonrocks sold at Bassnectar Concert?

im really starting to question how many people actually get good mdma crystal. when its all brown and clear chances are it could be some bangin sassafras, moonrocks tend to look just like that picture that vlrd posted. however ive seen all clear moonrocks, clear yellow ( best ive had ) and brown.

Can someone please explain the difference in Sass and MDMA please. *In simple man's terms

MDA as opposed to MDMA, less speedy more tranquill. Still fantastic, depending on what im doing i sometimes prefer it over mdma. Comes from the sassafras trees root bark, steam distilled into safrole oil just like mdma.

That's what I thought, but wanted to make sure.