Guide to necklace lengths
Choker length is approximately 14". It is designed to sit on the neckline and will go with a high-necked top or dress.
Princess length is around 18". This length is commonly used for necklaces with pendant as it hangs just below the collarbone.
Between 20" and 22", matinee length is long enough to fit around clothing and can be worn in front of collared shirts and blouses or above a plunging neckline.
Opera length is around 30" long. It hangs below the bust or can be doubled up as a choker.
A lariat (or rope length) is longer than 45".