The yardage needed for this shawl definetely calls for Tosh Pashmina !!!

Colour A: Thunderstorm
Colour B: Oak
Colour C: Byzantine

Clue 1:
Started Sept. 13th
Finished Sept. 15th
Weight: 112 g
Colour A, 63 g left => used appr. 58 g or 166 m/ 182 yards
Colour B, 68 g left => used appr. 54 g or 154 m/ 169 yards
Measurements:
46 cm/18 inches along side
100 cm/40 inches along spine

Clue 2:
Started Sept. 20th
Finished Sept. 21st
Weight: 164 g
Colour C, 70 g left => used appr. 52 g or 149 m/ 164 yards
Measurements:
115 cm/45 inches along striped edge
154 cm/61 inches along longer colour C edge
76 cm/30 inches along shorter colour C edge

Clue 3:
Started Sept. 27th
Finished Sept. 28th
Weight: 220 g
Colour B, 12 g left => used appr. 56 g or 160 m / 176 yards
Measurements:
76 cm /30 inches along shorter edge
220 cm / 86 inches along center spine

Clue 4:
Started Oct. 4th
Finished Oct. 5th
Total Weight: 321 gr
Colour C => used appr. 22 gr for the four border rows and 21 gr for the I-Cord-Bind-Off

Final Weight: 321 gr

Final measurements after blocking:
Short side: 127 cm / 50 inches
Length along center spine: 220 cm / 86 inches

Modifications:
Followed the pattern exactly, cast-on 3 extra stiches for the I-Cord, added two more I-Cord rows in each of the 2-yo-corners and four more I-Cord rows in the 5-yo-corner.

Leftover yarn:
Colour A: 12 gr
Colour B: 13 gr
Colour C: 26 gr

Genius design - thank you Stephen and fellow MKAL-knitters for the great time we all had !