Three lengths, three ways to wear.
Length is most of how a necklace sits. We currently make three: a collar, sitting high and close around the neck; a choker, resting at the base of the neck; and a princess, falling just below the collarbone. The same strand reads quite differently at each.
If you are unsure between two, the choker sits comfortably on most people, and is the easiest length to wear every day.