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

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.
Later, Renaissance gorgets were not worn with a breastplate but instead were worn over the clothing. Most gorgets of this period were beautifully etched, gilt, engraved, chased, embossed, or enamelled and probably very expensive.
The Japanese (samurai) form of the gorget is known as a nodowa.