The Crochet Shell Stitch is a beautiful stitch that works wonders with most of the crochet projects. In fact the stitch itself has a number of variations. The Shell Stitch is often worked in a group of 4 , 5 or 7 Double Crochets or Half Double Crochets. You can work the Shell Stitch in Rounds, or in Rows and they look very pretty as Borders around large projects