On page 40 in the comic „The Search“ Katara wears a betrothal necklace with the air symbols on it. Clearly a mistake and she has the water symbol on it a few
Katara's necklace | Avatar Wiki | Fandom
Katara's Necklace:TyLeeVersion by pah-her-pul on DeviantArt
Katara Choker, Water Tribe Necklace, Avatar Last Airbender Choker - Etsy
Avatar: The Last Airbender Katara Replica Choker | BoxLunch
Avatar the Last Airbender, Water Tribe Pendant Necklace Jewelry, Katara Gift | eBay