Description
Double terminated, twinned gypsum var. selenite crystal with fluorescent and phosphorescent hourglass with ultraviolet light. This piece has penetration crystals as well as twinning with a small part of the twinned crystal. There are multiple rainbows within the stone.
Size: 55 x 26 x 10 mm. 12 grams.
Locale: Willow Creek, Nanton, Alberta, Canada
Fluorescent and phosphorescent (there is a glow that remains briefly after the UV light is removed) with long wave, mid wave and short-wave ultraviolet light.