Mexican Sterling Silver Charm/Pendant, 1"

Mexican Sterling Silver Charm/Pendant, 1". Back stamp reads "FD CRISTAL (?)FENIX (MADE IN) MEXICO 925 STERLING". I have not been able to determine the maker of the piece, nor am I sure of the graphic on the front; it may be a gothic-style letter D or G, or possibly a symbol of some nature. Item is lightly scratched/tarnished. Measures roughly 1"x1", weighs 9 grams. tags: monochrome gothic initial stylized name