The diameter of bead is about 2,5 cm
1st round: 4 sc in ch-ring
2st round: 7 sc around ring
3st round: 2 sc in each sc = 14 sc
4st round: -* 1 sc in each of the first 2 sc, 2 sc in next sc * repeat from *-* 5 times = 19 - 20 sc
5,6,7,8,9б10 rounds: 1sc of each sc
Then needs to do shorten in another direction.