Why does heroin come surrounded by different colors and texture?

I was a moment ago thinking that people, especially kids and teens, are enticed to try it because it comes within so many variety. Does the colors of heroin signify something?Why does heroin come surrounded by different colors and texture?
The color of heroin indicates how pure it is. Whites are, of course, purer, and surrounded by powder form. These can be snorted. The blacks are usually like pitch and comes from Mexico, and is called Mexican black pitch. Heroin is a substance derived from morphine, which is derived from the seedpod fo the Asian poppy plant. Heroin was once believed to know how to cure addiction to morphine, but this no longer holds true because it has become a really serious problem within America and other countries as well.
i didnt know that
are u a crack herald?
It signifies what it is cut with, Heroin i white, pure gleaming bright white. The type near coloured specks is Daz and there are plenty of Washing Poweder Addicts who hold never taken Heroin out there.
This is why Prison is such a disaster as nation are suddenly given Heroin or Methodone and have their first definite trip courtesy of HM Plod.
Oh and if you do get and shoot up some concrete heroin it will probably kill you, There be a sadist in Glasgow who supplied heavily cut Heroin to society then when they annoyed him he give them some pure, just to see them die, surrounded by agony. friendly people Drug Pushers.