Hyalite Opal Mexico welo This piece is very gemmy

This piece is very gemmy

it is a great display specimen showing the growth of this particular crystal habit

but this is not one of them

Measurement: 129mm x 64mm x 33mm

Hyalite Opal Mexico welo This piece is very gemmyThis 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