Gauge isn’t important, can be made with any yarn as long as you use the right hook for that yarn.

I used:
Yarn: Scheepjes River Washed
Amount: 2 skeins in color 941 and 3 skeins in color 942.
Hook-size: 3.5 mm (4 mm for the edge)
Size one square: appr 1515 cm
Size blanket: appr 5064 cm