Oh! Uh, yeah, here...[She pulls her shirt collar down a bit to reveal that the larimar there is, in fact, not a necklace.]

They're stuck to us now, and they kind of act as a replacement for our powers...but not completely, because they can give you all sorts of other weird powers too. You can also pull weapons out of them. They're...weird, and probably magic, and hard to explain, but that big Heart Gem brought us her through the holes and gave us these in order to protect the town outside the temple.