These beads can be used for any decorative purpose. At the same time, these beads are sized for small necklaces. They are the same beads used by necklace makers in Poland. These beads are described as flat because they have one side that is mostly flat. To help you estimate your bead requirements, small necklaces weigh from 4 to 6 grams. Sometimes that may reach a little over 7 grams. The beads offered here scale about 250 beads per 10 gram package. That is a more or less figure with it most often being more. These beads are from the main amber bead supplier in Poland. You are getting them from that main amber bead supplier. For necklaces to be effective, they must be made of pure, genuine Baltic amber. All our Amber is pure genuine Baltic Amber. We abide by the standards of the International Association Of Amber, Gdansk, Poland.