Graduated beads from size 20mm x 20mm (Largest) to 7mm x 7mm (smallest).  Approximately 85 beads on a strand. Easily makes 2 necklaces combined with spacer beads.  Also called conch beads. I have 4 of these available to sell from Nigerian, the stock is in the UK and can post to anywhere in the world I can also design your beads for you. These traditionally only need gold or silver spacer beads as in picture.