Hello, first off all SORRY if this has been posted already, I havent found anything like it in planned features or anywhere else.
The idea is simple (to code its hard).
The idea is, like in the subject, necklaces. This needs a necklace slot. Same hight as the chestplate slot but at the right side instead of the left side of your skin. When you equip a necklace, it should show it on your skin.
Types of necklaces:
Pearl necklace (5 pearls)
Topaz necklace (1 Topaz)
Emerald necklace (1 Emerald)
Amethyst necklace (1 Amethyst)
Ruby necklace (1 Ruby)
Opal necklace (1 Opal)
Sapphire necklace (1 Sapphire)