Popular standard lengths include:

Collar or choker — 12-16 inches

Choker fits snugly around the neck, collar lies slightly lower and sits on the collar bone.

Princess –17-19 inches

Sits high on the chest, most versatile to be worn with all sorts of necklines.

Matinee — 20-24 inches

Works well with collars, suits and dresses.

Opera — 28-34 inches

Often worn with long evening dresses.

Ropes — Over 45 inches

Can be looped or knotted.