A new dyed-gelatin gel shows promise as a stable dosimeter for low-dose dosimetry processing. Fuchsine acid cyanide (FAC) dye diffuses in gelatin, forming a colorless sample, which developed a color with the increase in absorbed doses. Upon irradiation, the sample turned pink and the color change was measured at 550 nm using UV-vis spectroscopy. A formulation suitable for dosimetry was investigated by varying the concentrations of FAC. This dosimeter was also evaluated for stability, dose sensitivity, and irradiation effect dependence. On the other hand, it can be used as a dosimeter in a relatively dose range 1 to 170 Gy. The radiation chemical yield (G value) and pre- and postirradiation stability were studied.