This is Snowflake #76 in the book of 100 Snowflakes. Instructions are on Page 89. Pictured on page 34 in Showcase.

“On a winter evening, this large, branching snowflake might catch a glimmer of light from Polaris, the north pole star.“

Finished diameter: 4-1/8 in. (105 mm)
Thread required: 12 yd (11 m)

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