Celestine from La Grasta Mine, Sicily, Italy
Clear white celestine crystals (about 1cm) with sulphur on matrix. The celestine fluoresces a nice blue/white under UV light (any wavelength) and it has a greenish phosphorescence/afterglow.
Fluorescence under shortwave UV light.
Fluorescence under longwave UV light (365nm LED)
Phosphorescence/Afterglow after exposure to shortwave UV light.
Photo in normal light.