How many beads are in a gram? What about a hank?
The number of beads varies, of course, as some beads are a little heavier than others. but, a little experimenting reveals that the 20 g 6/0 seed beads would make one really full heaping tablespoon, assuming round glass beads actually wanted to heap, that is! A hank of 11/0s would give you 2 really full heaping tablespoons. Now, that is a lot more beads, as the beads are smaller.