9th Round. Ch 4, cluster st in same space, * ch 9, cluster st in next cluster st, ch 3, tr c in next tr c, ch 3, cluster st in next cluster st, repeat from * all around ending to correspond, ch 3, join.
10th Round. Ch 4, cluster st in same space, ch 6, sl st in 6th st from hook for picot, * ch 13, s c in 6th st from hook to form picot, ch 7, cluster st in next cluster st, ch 6, sl st in 6th st from hook for picot, cluster st in next cluster st, repeat from * all around, ending to correspond, join.
11th Round. Sl st into picot, ch 4, cluster st shell in same picot, * ch 5, 6 tr c in next picot, ch 5, cluster st shell in next picot, repeat from * all around ending to correspond, ch 5, join. All shells are cluster st shells and will be referred to as shells for remainder of doily.
12th Round. Sl st into center of shell, ch 4, shell in same space, ** ch 5, s c in 1st tr c, * ch 6, s c in next tr c, repeat from * 4 times (pineapple), ch 5, shell in center of next shell, repeat from ** all around ending to correspond, ch 5, join.
13th Round. Sl st into shell, ch 4, shell in same space, ** ch 6, skip 1 loop, s c in 1st loop of pineapple, * ch 6, s c in next loop, repeat from * 3 times, ch 6, shell in next shell, repeat from ** all around ending to correspond, ch 6, join.
14th Round. Same as last round but having 3 loops across each pineapple.
15th Round. Sl st into shell, ch 4, shell in same space, ch 3, cluster st in same space, ** ch 6, s c in 1st loop of pineapple, * ch 6, s c in next loop, repeat from * once, ch 6, 3 cluster sts with ch 3 between each cluster st in center of next shell, repeat from ** all around ending to correspond, join.
16th Round. Sl st into shell, ch 4, shell in same space, * ch 9, s c in 6th st from hook for picot, ch 3, shell in next ch 3 loop, ch 6, s c in 1st loop of pineapple, ch 6, s c in next loop, ch 6, shell in next ch 3 loop, repeat from * all around ending to correspond, join.
17th Round. Sl st into shell, ch 4, shell in same space, * ch 5, 7 tr c in next picot, ch 5, shell in next shell, ch 6, s c in last loop of pineapple, ch 6, shell in next shell, repeat from * all around ending to correspond, join.
18th Round. Sl st into shell, ch 4, shell in same space, ** ch 5, s c in next tr c, * ch 6, s c in next tr c, repeat from * 5 times, ch 5, shell in next shell, ch 6, s c in next s c, ch 6, shell in next shell, repeat from ** all around ending to correspond, join.