Brunette Girl With A Golden Gorget Necklace, Navel Piercing And Earrings Shows Off In The Swimming Pool

A gorget (/ˈɡɔrdʒɨt/) originally was a steel or leather collar designed to protect the throat. Later, particularly from the 18th century onwards, the gorget became primarily ornamental, serving only as a symbolic accessory on military uniforms.
As part of armour
Most Medieval versions of gorgets were simple neck protectors that were worn under the breastplate and backplate set. These neck plates supported the weight of the armour worn over it, and many were equipped with straps for attaching the heavier armour plates.