Chalcedony on Smoky Quartz “casts” after Laumontite Urals A nice representative thumbnail specimen

A nice representative thumbnail specimen of Amazonite

Specimen # HYALMEX41619

The piece is notably gemmy / transparent and really looks good with a bit of backlighting to see in the insect inclusions

A more than worthwhile Ferberite that would make a great addition to any collection

Most everything that evades the crusher is usually taken out of Bolivia by a geologist who has an "in" at the mine

Chalcedony on Smoky Quartz “casts” after Laumontite Urals A nice representative thumbnail specimenThis locality in the Cripple Creek District (purportedly in an old mine shaft) produced unique epimorphs or "casts" of Smoky Quartz and Chalcedony replacing Laumontite. The Smoky Quartz has a distinctive muted silvery grey color, with very little luster and a somewhat stalactite esque growth due to the way the Quartz overgrew the preexisting Laumontite. The lack of luster on the Quartz is most likely due to a micro coating of Chalcedony. The biggest