These beads are sized for small necklaces. They are the same beads used by necklace makers in Poland. To help you estimate your bead requirements, small necklaces weigh from 4 to 6 grams. Sometimes that may reach a little over 7 grams. These beads are sold by weight. The number of beads will vary. The beads offered here scale about 70 beads per10 gram package. That is a more or less figure with it most often being more. The minimum size of the beads is 6 mm. These beads are from the main amber bead supplier in Poland. You are getting them from that main amber bead supplier. All our Amber is pure natural Baltic Amber. We abide by the standards of the International Association Of Amber, Gdansk, Poland.