Diamond motif: cardigan and hat by Golden Hands

Diamond motif: cardigan and hat

Knitting
DK (11 wpi) ?
6 stitches and 8 rows = 1 inch
in stocking stitch 3.75 mm needles
US 5 - 3.75 mm
US 2½ - 3.0 mm
30 (32, 34) inch bust / hat size not specified
English

Materials
20 (21, 22) x balls of specified yarn in main shade/light grey and,
1 ball each of two contrast shades/ pink and black.
8 buttons.