Daylight Fluorescent Hyalite Opal Madagascar but this is not one

but this is not one of them

Hunan Province

This hyalite opal specimen not only will glow under an artificial UV lighting source

Measurement: 47mm x 33mm x 17mm

It displays the same daylight fluorescent characteristic (green to bluish green in daylight) as the Rogerley material

Daylight Fluorescent Hyalite Opal Madagascar but this is not oneThis hyalite opal specimen not only will glow under an artificial UV lighting source, this particular source of hyalite opal will actually fluoresce in daylight, too! That is what makes this source(Zacatecas, Mexico) so unique. It looks best in diffused daylight, right outside of direct sunlight and it will have subtle green glow, while in indoor home lighting, much of this opal is almost colorless. The intensity of daylight fluorescence will vary