Diameter is just what it is named after, a half circle. I’m a secret nerd, and the name fits. Made in rows with strategically placed increases, Diameter is large and awesome. Make it as big or as small as you want. I say the bigger the better. Each simple stitch section is separated by a row of reverse and regular purl stitches. These rows create wonderful texture. 

Skill Level: Intermediate
Sample is Lola Bean Yarn Co
Wax Bean 80% Superwash Merino/ 20% Silk; 400 yards / 100 g 
A-Ashes; B-Goldfish; C-Steel; D-Forgiveness

Yardage:
A - 270 yds / 67.5 g
B - 234 yds / 58.5 g
C - 274 yds / 73 g
D -224 yds / 56 g

Materials:
Interchangeable Tunisian Crochet Hook: I (5.5 mm) 
Cords: 12, 24 and 48 in. (30.5, 61 and 122 cm) (If desired to accommodate the growth of the shawl.)
Tapestry needle
Tape measure

Gauge: 18 sts x 20 rows TSS = 4 in (10 cm) Measurements: 60 in. x 20.5 in. (152.4 cm x 52.07 cm)