I love this stitch! I’ve been eyeing the vintage shell stitch for years and I’ve happily created a baby blanket featuring this pretty arrangement of treble crochets.

Here is a video tutorial on AllFreeCrochet for the Vintage Crochet Shell Stitch. Some of the stitch counts are slightly different than my pattern, but this video will give you the general idea for how to work up this stitch and especially where you place your hook in rows 2 and beyond: https://www.allfreecrochet.com/Crochet-Videos/Vintage-Cro...

To adjust the width of the blanket, chain any multiple of 6.

Gauge is not critical for this project.

Materials
Size 5 bulky weight yarn, approximately 730 yards. For this pattern I used:
3 Skeins Brown Sheep Company Shepherd’s Shades Yarn, 1 each in Pink Sapphire, Wintergreen, and Split Pea
2 Skeins Hayfield Baby Blossom Chunky in shade 0350
Size K/6.5mm crochet hook
Tapestry needle for weaving in ends