Raised black spot on labia about 1-2cm what could be?

Spots: Spots are quite common and are fairly normal. A raised black spot is always suspicious so i would suggest you see your doctor to have this checked.

Possibly see MD: Although pigmented lesions are common, this does not sound typical. What concerns me is that you are asking about a very unusual lesions that is raised. To establish a diagnosis you will need to see your gynecologist for an exam and possible biopsy.