Diopside, Lake Valhalla Quarry, Montville Township, New Jersey

Light-colored piece of diopside with a marble-like texture, from the Lake Valhalla Quarry, Montville Township, Morris Co., New Jersey. This specimen is nearly solid diopside. Fluoresces bright blue/white under short wave UV. The size of this specimen is 81 x 72 x 33 mm, and it weighs 208 grams.