Specimen of fluorescent schalenblende from the Raibl Mines, Cave del Predil, Tarvisio, Udine Province, Friulli Benezia Giulia, Italy,...

Here is a really nice "Fantasy rock" that I recently acquired. It contains only modest amounts of tugtupite, occurring as replacement...

Shown in this post is a modest-sized, but pretty nice specimen of hackmanite from Narsaq, Illmaussaq complex, Greenland. It is associated...

The sulfur mines of the Agrigento region of Sicily, Italy are notable for the production of well-formed clusters, plates and groupings of...

This is a polished slab of purple charoite, black aegirine, white microcline, light brown tinkasite, and steacyite from the Murunskii...

Willemite, Fluorite, Calcite. Garpenberg, Sweden Short wave green Willemite, red Calcite & Long wave blue Fluorite.

Hydrozincite has an intense light blue fluorescence and smithsonite is dark blue creating a wild contrast! (according to some comments)....

The Berta quarry is an inactive quarry located on the northwest slope of the Sierra de Roques Blanques, in the municipalities of San...

Fluorapatite var."Spargelstein" on Hematite (not fluo) covered with small spheres of Calcite and Chalcedony. From Nuestra Señora del...

Small plate of compact calcite crystals; 7x4x1cm, 59g. Zoned yellow/green fluorescence under shortwave UV light, honey under longwave UV...