This is Snowflake #23 in the book of 100 Snowflakes. Instructions on Page 55. Pictured on page 24 in Showcase.

“This dense little snowflake is named for firn, which is old snow that has become granular and compacted.“

Finished diameter: 2-5/8 in. (67 mm)
Thread required: 8 yd (7.3 m)

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

This pattern is one of 10 featured from the book on Lion Brand’s website. Lion Brand recommends Lion Brand Bonbons (cotton) yarn, with a 3.5 mm (E) hook or 3.75 mm (F) hook.

Lion Brand StitchFinder: Crochet Snowflake: Firn

Snowflake directions reproduced with permission, from 100 Snowflakes to Crochet by Caitlin Sainio, courtesy of St. Martin’s Griffin 2012.