what does a gram look like?

[lateralus]

Make a ring with your thumb and index finger. Now if you break up a gram of weed, the pile will be about as big around as that ring. But of course it will vary according to the density of the weed.

That sounds about right. A gram fits snuggly into one of those mini ziplocks. The kind with the little bud leaves/spades/hearts/etc on them.

EDIT: It's going to look a lot different if it's compressed.. of course I doubt you're only going to buy a gram of compressed weed.