# - 4965 Daylight fluorescent hyalite opal
This twin set of hyalite opal specimens is daylight fluorescent; due to the UV rays in sunlight it glows a pale green colour when exposed to the sun. Under artificial ultraviolet light it glows a bright neon green. Other hyalite opal specimens from Mexico and Australia are typically not UV reactive enough to fluoresce in daylight, whereas the deposit in the Erongo Mountains in Namibia, Africa, (where these specimens were found) is known for producing hyalite opal specimens which display this impressive daylight fluorescence.
This twin set of hyalite opal specimens is daylight fluorescent; due to the UV rays in sunlight it glows a pale green colour when exposed to the sun. Under artificial ultraviolet light it glows a bright neon green. Other hyalite opal specimens from Mexico and Australia are typically not UV reactive enough to fluoresce in daylight, whereas the deposit in the Erongo Mountains in Namibia, Africa, (where these specimens were found) is known for producing hyalite opal specimens which display this impressive daylight fluorescence.
This twin set of hyalite opal specimens is daylight fluorescent; due to the UV rays in sunlight it glows a pale green colour when exposed to the sun. Under artificial ultraviolet light it glows a bright neon green. Other hyalite opal specimens from Mexico and Australia are typically not UV reactive enough to fluoresce in daylight, whereas the deposit in the Erongo Mountains in Namibia, Africa, (where these specimens were found) is known for producing hyalite opal specimens which display this impressive daylight fluorescence.