This skinny scarf (only 3 inches wide) can be worn in the popular lariat style, if desired. The pattern looked like a single chain of diamonds, hence the pattern name. I changed a few stitches of an 1892 Butterick insertion pattern to make this scarf. The pattern has only 13 stitches and 10 pattern rows. It’s not that difficult and, after a couple of repeats, you probably won’t need to refer to the instructions again!
The 2-strands of DK-weight yarn scarf is 3 inches wide and the chunky yarn version is 3.5 inches wide at gauge but gauge is whatever you like.

Skills needed: cast on, slip, knit, purl, YO, SSK, k2tog, SK2P and bind off in knit stitch.

Gauge is not important in this pattern. Any block-able yarn/thread will work. Make a swatch to check gauge and appearance.

28 yards of Hobbii Acacia yarn (2 strands held together) will make 10 inches of this scarf: 14 yards from each skein.