I know there are plenty of derivatives of Morphine, Fentanyl, and Heroin out there, but does anyone know the common ones that show up in Heroin bags or "stamps" other than actual Diacetylmorphine? I know many people say that it is all just Heroin, but I can tell the difference. There is clumpy "mud" looking stuff, brown powder, tan powder, white powder, etc.. Plus, I know when I get real Heroin. Some of the stuff gets me really high (though the high isn't quite like Heroin) for about an hour or so, and some of it (real Heroin) gets me just as high but for hours on end. There is without a doubt a profound difference. Anyone with knowledge on this subject, please reply.