Description
Sand included gypsum var. selenite desert rose crystal dollar / coin. Fluorescent with 365nm long wave ultraviolet light.
Size: 70 x 60 x 8 mm. 36 grams.
Locale: Luderitz District, Karas Region, Namibia
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.