This rock contains an assemblage of light, colorless scapolite and calcite and dark franklinite, from the famous Sterling Mine, Sterling Hill, New Jersey. Under short wave UV, the scapolite fluoresces a moderate maroon color, and the calcite a brighter orange. The franklinite is not fluorescent. The size of this specimen is 7.49 x 4.38 x 3.12 cm, and it weighs 125 grams.