That rock is fluorescing under a black light (ultraviolet light) :

- the bright green fluorescence - it contains willemite, a zinc silicate mineral known for its strong green glow under UV light.

- the faint purplish areas - calcite, which often fluoresces pink, red, or purple under UV.

This combination—green willemite and pink/purple calcite—is commonly found in fluorescent mineral specimens from Franklin or Sterling Hill, New Jersey, which are famous locations for these types of rocks.

Please refer to the photos for conditions .

The item weighs approximately 14 lbs

The rock measures approximately 7” x 4.5” x 4”