I’ve added some excellent crystals in this new Alberta Selenite Update (click here). These specimens of gypsum, var. selenite were recovered during a project at Willow Creek, near Nanton, Alberta in the early 1990s. These crystals are sharp, lustrous and transparent – many are like crystal models.  And… they have great fluorescence.
Willow Creek selenite crystals are fluorescent under ultraviolet light, exhibiting an “hourglass” pattern that is not visible in natural light. It is clearly visible in short-wave, medium-wave and long-wave ultraviolet, most prominent in short-wave.
These crystals are also phosphorescent – the hourglass pattern remains briefly visible in a green hue in total darkness after the ultraviolet light source is extinguished – the selenite crystal then fades and until it too is dark.

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 6.7 cm.

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 6.7 cm.
Same crystal as in the previous photo, exhibiting fluorescence,
photographed in short-wave ultraviolet light.

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 7.2 cm

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 6.5 cm

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 6.2 cm

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 6.2 cm.
Same crystal as in the previous photo, exhibiting fluorescence,
photographed in short-wave ultraviolet light.

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 7.6 cm

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta – 5.0 cm

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta – 5.0 cm
Same crystal as in the previous photo, exhibiting fluorescence,
photographed in short-wave ultraviolet light.

Gypsum, var. selenite, Willow Creek, near Nanton, Alberta, Canada – 5.8 cm