Working with multi-colored yarn
Variegated yarn behaves differently from a solid, and the difference shows up in the finished fabric rather than the skein. Short color repeats tend to pool or flash into diagonal stripes over a fixed stitch count; long repeats behave more like self-striping. If you're working a shawl or anything with changing stitch counts, pooling is usually a non-issue. For a sweater body or a sock leg, alternating two skeins every couple of rows will break up both pooling and any dye-lot difference at once.
Kettle-dyed yarns like Malabrigo Rios and Rasta are tonal, one color at several depths and are the most forgiving choice if you've not worked with variegated yarn before. Our recycled sari silk sits at the other end: every ball is genuinely unique, so buy what you need for the project in one order.
Every yarn here lists fiber content, yardage and suggested needle size on its product page.