10 mm by 5 mm red coral dog bone beads

These red coral beads make for an interesting geometry project. The hole is in the middle of the dog bone shape of these beads. The bead is thinner in the middle and rounded at each end. They are 5 mm at the fat end and approximately 3 mm in the middle. Some strands are a bit smaller than others. Each strand is 16 inches long and contains approximately 160 beads.