This is Snowflake #91 in the book. Instructions are on page 100. Picture is on 39.

“This beautiful pattern is named for the Crivetz, a cold, north-to-east wind is Romania.“

Finished diameter: 3-1/4 in. (83 mm)
Thread required: 10 yd (9.1 m)

All pattern samples in this book are made with size 10 thread and a size 5 (1.9 mm) crochet hook.