Don't know if this is useful, but meh
In Guatemala, as elsewhere, milagros are used as prayer offerings; but in addition, silver milagros/dijes have a talismanic function and are worn as part of women's chachales (silver chain necklaces with silver coin, coral, glass trade beads, etc). Certain bird and animal dijes in a woman's chachale may refer to her nahual—the bird or animal reflective of her personal spirit, her animistic alter-ego.
https://web.archive.org/web/20120409052412/https://www.collectorsguide.com/fa/fa052.shtml