A nice sample of a rather uncommon mineral specimen, Manganoan Adamite from the Ojuela Mine in Mexico. 

Two cubic crystals of the rare mineral BOLEITE. Boleite contains silver, copper, lead and other elements. The larger crystal has a face of 0.4 inches with noticeable wear on the lower half. The smaller cube has no damage. From the type locality of the Boleo District of Baja California Sur, Mexico. The luster is vitreous.

This specimen is entirely translucent Hyalite Opal except for a little bit of dirt on the bottom that I could not clean off. The Hyalite fluoresces a brilliant green under a short-wave UV light. 

The Hyalite Opal is the clear, globular layer on top of the white Milk Opal in this specimen. The Hyalite fluoresces a brilliant green under a short-wave UV light.