Slices of Sky by Erica Kempf Broughton
Small size (shown in pictures) uses approximately 1.75 oz of variegated yarn and 2.5 oz of semi solid yarn
Large size uses approximately 2.2 oz of variegated yarn and 3.1 oz of semi solid yarn
Either size should be able to be made out of 2 x 3.5 oz (100 g) balls of sock yarn as long as they have 400 yds or more
The sample piece was made out of the Roving Indiana 2018 limited edition colorway of Oink Pigments Targhee Sock yarn