Hyalite Opal from Zacatecas Mexico tn but according to a study

but according to a study done by Gem-A (The Gemmological Association of Great Britain)

These is also a unique little clear crystal that grew on the side of this large crystal as well

This is a beautiful green-colored tourmaline crystal from Brazil

Weight: 299g

Gorgeous colored aquamarine in quartz

Hyalite Opal from Zacatecas Mexico tn but according to a studyThis 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