This great idea from REGIA makes it incredibly simple to knit two identical self-patterned gradient socks from one skein!
And the good thing is its easy. The yellow starter thread - which comes from inside the yarn skein - marks the beginning of each sock. Simply cut off the yellow starter thread and begin knitting the first sock. After the first sock is completed, unwind the yarn to the next yellow starter thread and cut it off. Then simply knit the second sock.
A base pattern is included inside the ball band and more details on how to knit these socks can be found here.