Hyalite Opal Fluorescent Mineral poker chip Locality: Mimoso du Sul Mine

Locality: Mimoso du Sul Mine

Measurement: 53mm x 43mm x 38mm

The size and quality is the best that I have seen available

but this particular piece does have an intense green glow in daylight

this source also has the unique characteristic of daylight fluorescence

Hyalite Opal Fluorescent Mineral poker chip Locality: Mimoso du Sul MineThis 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