I got this rock off this guy i know. It was a ball but it waz brown he sayed it waz good shit and it shur as hell was it was a light brown. what could have been done with it ::)
heroin if is not even white dont take it it coul be cut with anything even if it is coke
I don't comment on the brown shit, but for your own health, recrystallize it.
I once heard off a mate that this causes problems. Swims coke was very high quality with clear crystal planes and previous bioassay reinforced this.
Swim followed the methods mentioned in a post about dissolving in hot methanol and slowly dripping onto a glass surface, one drop at a time, until the solvent evaporated. Swim was meticulous about this but anyway the result was a sticky mess of really strong tasting coke that never actually dried out. Even after leaving it for 2 weeks it never was dry enough to put up your beak.
good luck
left a quater out in a friends house and it soaked up water from air, had to be placed under a heat lamp to dry it