Chain Length	Length (cm)	Style Position
14 inch	35 cm	Choker (tight around neck)
16 inch	40 cm	Base of neck
18 inch	45 cm	Most common / collarbone
20 inch	50 cm	Slightly below collarbone
22 inch	55 cm	Upper chest
24 inch	60 cm	Mid chest
30 inch	76 cm	Long chain / pendant style