Blue grey Chalcedony hosts a series of Chalcedony-pseudomorphed Wulfenite crystals. An exceptional perky-box mounted presentation from the legendary Finch/Barking Spider Mine. Finch Mine, Keystone Gulch, Chilito, Hayden area, Banner Mining District, Gila County, Arizona, USA. 1" x .5" x .75", .6 oz.