Bead Count per gram Chart
These quantities are averaged/approximated.  Each bead finish may cause count variations.  Metallic seed beads will weigh more than a Fancy, so remember this is an approximate count. 

15/0 seed beads are about 290 per gram.

11/0 seed beads are about 110 per gram.

8/0 seed beads are about 38 per gram.

6/0 seed beads are about 15 per gram.

11/0 Delicas are about 190 per gram.

#3 Bugles are about 95 per gram.

Drop beads are about 20 per gram.

Square beads 3x3 are about 21 per gram.

Square beads 4x4 are about 12 per gram.