Inka's corundum

A dark-golden, smooth thing of the old world that Inka found by the dry ford and wore on a string as "her Goldie." Always warm to the touch and heavier than a thing its size should be; no one in the Combes knows what it's made of or where it came from — the healer Zora gives it the working name "corundum" for lack of a better one. While Inka wears it, a wave of impossible healings runs through the Combes: wounds close ahead of their time, bones knit in weeks instead of months, and people speak of the blessing. In R7 one of the Eternal comes to the village; Inka gives up her "Goldie" freely, in return for a heavy purse for the elder, and he goes on his way — and the healings in the Combes go back to their ordinary pace.