Karen's necklace

"The ruby completely protects against burns from small fires and lessens burns from large fires. The sapphire protects against both slipping on ice and drowning. The tiger’s eye beryl prevents slipping on mud or gravel or being buried in landslides. The aquamarine however is the single aspect that I think would interest you the most, it protects against thrown knives, fired arrows or darts, and falling objects. While this protection is not absolute it will turn all but the most determined and directed blows from killing strikes into glancing blows or even near misses. They don’t require any magical ability on the part of the wearer. The only downside to this is that they need to be recharged by the corresponding Elementals once each month."

Katya(Theran's sister and Bran's wife) has a sapphire heart pendant, Karen(Katya's daughter and Theran's niece) has that protective charm necklace made from Tiger Eye Beryl(Earth), Ruby(Fire), Sapphire(Water), and Aquamarine(Wind)(each stone is enchanted by a different one of Theran's Elemental Summons to protect her and help them find her of she went missing), and Ellisandra(Theran's fiance) has an emerald charm bracelet(no special powers despite being a "charm" bracelet).