IF it's sand, it wont be harmfull, as far as i know. The heat from a ligher or a burning joint isnt hot enough to melt sand, so everything will burn apart from the sand, which will be in the ash.

If it's something other than hash, get a new dealer. Simple as that, no need for threads, no need for discussion, no need for arguments. Know who your buying from. It ISNT hard, it's takes time, and you have to make friends with people before they'll let you into secrets, but as long as you dont give up, you'll get there in the end, and have a good source of GREAT bud at low prices.

Good dealers arnt kids.

Good dealers wouldnt buy sandy bud, let alone sell it on, even if they were missing out on profit.

Good dealers are not dealers, they are business men, with business sense, running the cannabis distibrution like a business... a very profitable one.